Nuclear numbers in syncytial muscle fibers promote size but limit the development of larger myonuclear domains Nat Commun. 2020 Dec 8;11(1):6287. doi: 10.1038/s41467-020-20058-7. ... Surprisingly, the results revealed an inverse relationship between nuclei numbers and reserve capacity. We propose that as myonuclear …It’s easy to exercise the muscles you can see—your biceps, your quads—but there are more muscles in your body than just the big ones. We’ve talked before about the muscles in your ...Structurally, Skeletal Muscles consist of long, multinucleated fibres, while Smooth Muscles have shorter, spindle-shaped cells with a single nucleus. Skeletal Muscles work in pairs; one Muscle contracts while the other relaxes, providing the necessary antagonistic action for movement.Both cardiac and skeletal muscle tissues are striated and smooth muscle is not, hence its name. Skeletal muscle cells have more than one nucleus, are large and run parallel to each other. Cardiac muscle cells usually have only one, sometimes two, centrally located nuclei and are branched. They also are connected to each other via gap junctions.Terms in this set (24) Skeletal muscle location. attached to bones or skin. skeletal muscle structure. cross striated, multinucleated, unbranched long cylindrical shape with lots of mitochondria. Skeletal muscle function. Posture, movement, heat production. Type of control - skeletal muscle. voluntary, each cell has one synapse (neuromuscular ...Abstract. Although polyploid nuclei have long been known to be present in many adult human tissues, the ploidy of smooth muscle cells in human artery wall has never been determined. We measured DNA content in individual smooth muscle cell nuclei of artery wall specimens by two means: Feulgen microdensitometry and flow microfluorimetry.Striated muscles—skeletal and cardiac muscle—differ in terms of the number and position of nuclei. In humans, skeletal muscle fibers are syncytia and their nuclei are peripheral (Allbrook, 1962 ), while cardiomyocytes are mononucleated (even though they are tetraploid) and this nucleus is central (Adler, 1975; Kikuchi and Poss, 2012 ).Smooth muscle, when viewed in cross section, presents a considerable variation in cell and nucleus size. In addition, because of the shape of smooth muscle cells and the resulting plane of section, the number of cells possessing visible nuclei will also vary considerably throughout the field.This also holds true for the multinucleated skeletal muscle fiber, as the number of diploid cell nuclei scales sublinearly with fiber volume but linearly with the fiber surface area (Hansson et al., 2020a) . FIGURE 2: Nuclear number scales in direct proportion to the surface area. (Ai) DNA content (nuclear number) regressed on fiber volume ...Lines wall of organs, contracts to make process of breaking down easier. Slide 1: Muscle- Skeletal Longitudinal Section and Slide 2: Muscle-Skeletal Cross Section Yes Single, 1 Longitudinal side is smooth long and connected while the cross section is the opposite rough, broken and divided. Bring fluid to necessary locations, lines organs.Study with Quizlet and memorize flashcards containing terms like What are 2 additional terms used to describe cardiac muscle cells?, True or false. Cardiac muscle cells have myofibrils similar to skeletal muscle cells, Describe skeletal muscle cells and cardiac muscle cells in terms of the number of nuclei present. What accounts for the difference? and more.Comparison and Contrast: Number of Nuclei: Skeletal muscle has multiple nuclei per cell, while both cardiac and smooth muscles typically have a single nucleus per cell. Cell Shape: Skeletal muscle cells are long and cylindrical, while cardiac muscle cells are branched and cylindrical, and smooth muscle cells are spindle-shaped.As in humans, Drosophila muscle fibers form by the fusion of diploid myoblasts, creating one cell with multiple nuclei- the myotube or muscle fiber (Figure 1A). The number of fusing myoblasts determines the number of nuclei per cell. Those nuclei then increase in ploidy via endoreplication, leading to an increase in gene expression …Smooth muscle is also present in the eyes, where it functions to change the size of the iris and alter the shape of the lens; and in the skin where it causes hair to stand erect in response to cold temperature or fear. Figure 10.9.1 10.9. 1: Smooth Muscle Tissue Smooth muscle tissue is found around organs in the digestive, respiratory ...The nuclei are embedded in the cell membrane (5) to be just inside the cell. This type of tissue occurs in the muscles that are attached to the skeleton. Skeletal muscles function for the voluntary movements of the body. Muscle type 2) Smooth muscle cells are spindle-shaped (6), and each cell has a single nucleus (7).Despite its similarities to skeletal muscle, cardiac muscle has a number of notable histological differences including: Branching fibres; Centrally located nucleus (occasionally two nuclei per cell) T tubules lie in register with the Z band and not the AI junction (as in skeletal muscle).Abstract. Abstract Adult skeletal muscle fiber is a symplast multinuclear structure developed in ontogenesis by the fusion of the myoblasts (muscle progenitor cells). The nuclei of a muscle fiber (myonuclei) are those located at the periphery of fiber in the space between myofibrils and sarcolemma. In theory, a mass change in skeletal muscle ...Figure 15.3.2 15.3. 2: Muscle type 1) Skeletal muscle cells are long tubular cells with striations (3) and multiple nuclei (4). The nuclei are embedded in the cell membrane (5) to be just inside the cell. This type of tissue occurs in the muscles that are attached to the skeleton.Cardiac muscle fibers are long, branched cells, shaped like cylinders joined end-to-end, with one or two nuclei located centrally. The fibers are separated by collagenous tissue that supports the capillary network of cardiac tissue. The myofilaments of cardiac muscle are arranged in a similar pattern to skeletal muscle, resulting in cross ...Study with Quizlet and memorize flashcards containing terms like Contractile cells of the body can be classified into three major groups based on their shape, position of nuclei, presence of striations and whether they are under voluntary or involuntary control. Name the three major groups of muscle cells., Describe Skeletal Muscle Cells (shape 1), Describe Cardiac Muscle Cells (shape 2) and more.A smooth muscle cell is smaller in size compared to skeletal muscle cells, generally ranging from 20 to 200 micrometres in length. It possesses a spindle-shaped or elongated shape with tapered ends. Unlike skeletal muscle cells, smooth muscle cells possess a single, centrally located nucleus. Step 2. 2 of 2. Facial muscles. Found in voluntary sphincters- lips, urethra, and anus. Table 10.1: Muscle Type – Structure, Function, Location. Figure 10.2 The Three Types of Muscle Tissue The body contains three types of muscle tissue: (a) skeletal muscle, (b) smooth muscle, and (c) cardiac muscle. a) cardiac muscle is like skeletal muscle. b) cardiac muscle is like smooth muscle. c) cardiac cells are cylindrical rods. d) cardiac cells have a single nucleus. e) cardiac muscle has sarcomeres. f) cardiac muscle has pacemaker cells. g) cardiac muscle is striated in appearance. h) cardiac muscle has gap junctions. i) cardiac muscle has troponinThe fibers are small and clumped-packed together. Smooth muscle keeps blood fluids and nutrients flowing through the body. This muscle is a voluntary controlled muscle. Slide 1: Muscle- Skeletal Longitudinal Section and Slide 2: Muscle-Skeletal Cross Section Yes, there are striations across the width of the muscle cell. There are multiple nuclei.Sep 19, 2022 · However, we note that the smooth muscle cells included nuclei from pericytes 24, vascular smooth muscle cell type 1 and type 2 24,25 (Supplementary Fig. 1, Fig. 2), and an uncategorized smooth ... However, like skeletal and cardiac muscle, smooth muscle is also surrounded and separated by a connective tissue called endomysium. Smooth Muscle Nucleus. Smooth muscle cells have only one nucleus, which is located in the central portion of the cell. In contrast, skeletal muscle tissue has multiple nuclei around the peripheral portion, whereas ...Smooth muscle may be studied using slide #29 #029-1 smooth muscle Webscope or slide #169, ... Find the skeletal muscle nuclei and note their peripheral location. Note the intimate contact between capillaries and muscle cells and be sure you can tell where one muscle cell or fiber stops and another begins (you can see parts of four fibers in ...The muscle that extends the arm at the elbow. Ability of a muscle to resume its resting length after being stretched. Elasticity. Usually contracts at a fairly steady rate and can contract without stimulation from the nervous system. Cardiac muscle. Science. Biology. Anatomy. study module ch 9.(The full length of smooth muscle nuclei is only apparent when the plane of section is perfectly aligned with the long axis of the cells.) A very small bundle of smooth muscle can be particularly inconspicuous when cut in cross section. In that case, the cell nuclei appear as small round dots whose apparent size (about 3-4µm) and consistent ...Abstract. Although polyploid nuclei have long been known to be present in many adult human tissues, the ploidy of smooth muscle cells in human artery wall has never been determined. We measured DNA content in individual smooth muscle cell nuclei of artery wall specimens by two means: Feulgen microdensitometry and flow microfluorimetry.Skeletal, Smooth & Cardiac Muscle Fibers. Ziser, 2001. Striated Muscle Cells. Smooth Muscle Cells ... nucleus and striations. Striated: many myofibrils in orderly.The number of nuclei in the cells of smooth muscle of the media, and the thickness of the media and intima of coronary arteries were investigated by histometric measurements with regard to their behaviour in different stages of life In normal hearts and in hearts altered by disease. Seven normal hea …Depending upon whether the number of MTs or the number of kinesins are limiting, the resulting repulsive force can be decreasing with distance or be distance independent. 4 and 5: As 2 and 3, but the nucleus interacts with cell boundary or with motors on the cell cortex at the cell boundary. 6 and 7: Analogous to 1 and 3, but with the …Jul 30, 2023 · Introduction. Cardiac muscle also called the myocardium, is one of three major categories of muscles found within the human body, along with smooth muscle and skeletal muscle. Cardiac muscle, like skeletal muscle, is made up of sarcomeres that allow for contractility. However, unlike skeletal muscle, cardiac muscle is under involuntary control. Muscle tension depends on: Number of motor units recruited. Degree of muscle stretch. Relative size of the muscle fibers - the bulkier the muscle fiber (greater cross-sectional area), the greater its strength. Recruitment also helps provide smooth muscle action rather than jerky movements.Oct 30, 2023 · Striated muscle; formed of long, multinucleate, unbranched myocytes. Attached at one or either ends to a bony attachment point. Cardiac muscle. Striated muscle; formed of short, uninucleate, branching myocytes which connected at intercalated discs. Specialized muscle of the heart → myocardium. Smooth muscle. Number of nuclei Voluntary or involuntary control Cardiac yes One Involuntary Skeletal yes Several Voluntary Smooth no One Involuntary. ... Based on morphological differences, one can differentiate between cardiac and skeletal muscles by the number of nuclei. For example, cardiac muscle has 1 nuclei while skeletal muscles have several nuclei ...Smooth Muscle Cells. Smooth muscle cells are spindle-shaped and have single elongated nuclei. As in cardiac muscle cells, the configuration of the nuclear membranes in smooth muscle cells changes during contraction and relaxation. Smooth muscle cells contain thin (actin) and thick (myosin) contractile filaments as well as cytoskeletal filaments.Put these steps of cardiac muscle excitation-contraction coupling in order, from top to bottom. Put the step that doesn't belong at the bottom of the list a. Ca2+ binds to L-type Ca2+ channels, allowing Ca2+ to flow into the cytosol from the sarcoplasmic reticulum b. the membrane is depolarized by Na+ entry c. L-type Ca2+ channels open, allowing Ca2+ to enter the cytosol from the ... Growth in cell size is fundamental to normal development and function of organ systems and organisms, and this is especially true for skeletal muscle, where postnatal increases in muscle size and mass occur predominantly through longitudinal and radial enlargement of existing myofibers. Mirroring findings in rodents, average fiber (Types I and ... Muscles and Oxygen - Working muscles need oxygen in order to keep exercising. Learn how your blood gets oxygen to your muscles. Advertisement If you are going to be exercising for ...Study with Quizlet and memorize flashcards containing terms like The essential function of any muscle is to, The three types of muscles are, Which of the following can best be used to distinguish cardiac muscle from smooth muscle? Cardiac muscle, unlike smooth muscle, is involuntary. Cardiac muscle has a single nucleus; smooth muscle has peripheral nuclei. Cardiac muscle, unlike smooth muscle ...This approach enables expression profiling of nuclei from muscle, despite its syncytial structure. ... Number of DEGs per comparison. (E) ... FAPs, or macrophages. However, satellite cells, endothelial cells and smooth muscle cells were all significantly reduced with age (Table 1). Nuclei identified as derived from SCs in younger subjects ...Sep 19, 2022 · However, we note that the smooth muscle cells included nuclei from pericytes 24, vascular smooth muscle cell type 1 and type 2 24,25 (Supplementary Fig. 1, Fig. 2), and an uncategorized smooth ... The origin of the nuclei was identified by specific markers (Fig. 1b and Supplementary Figs. 1e and 2a, Supplementary Data 1), with 68% of nuclei originating from myofibers, 19% from FAPs, and ...Terms in this set (25) Smooth muscle cells are long, spindle-shaped, surrounded by an BLANK, have a BLANK centrally located nucleus, and lack striations and myofibrils. smooth muscle cells lack BLANK and BLANK. smooth muscle often forms layers around BLANK organs. cytoplasm is filled with actin and myosin but no BLANK.Cardiac muscle cells have many nuclei. Skeletal muscle cells are long and cylindrical with many nuclei. Cardiac muscle cells are found in the heart and large blood vessels. Smooth muscle cells have T tubules.Nuclei of smooth muscle cells. These cells show a very elongated fusiform nucleus which contains small nucleoli. The small incisures in the nucleus surface are due to a contraction of the smooth muscle fiber. Designers also selected these stock photos. Fracture shaft of fibula bone ( leg bone ) . X-ray of leg ( 2 position : side and front view )Position of nuclei during muscle development as seen in cross-section (left) and longitudinal samples (right). As new nuclei (pink) are incorporated from myoblasts during fusion, they are rapidly moved to the center of the myotube by a process that requires the microtubule cytoskeleton (green). ... Number and spatial distribution of nuclei in ...The contractions of smooth muscle keep blood, fluids, and nutrients moving to necessary locations throughout the body. The smooth muscle is of voluntary control. Slide 1: Muscle- Skeletal Longitudina l Section and Slide 2: Muscle- Skeletal Cross Section. No, there are not striations across the width of the muscle cells. There are multiple nuclei. A)Smooth muscle has more troponin than skeletal muscle. B)Actin and myosin generate force through the crossbridge cycle. C)Smooth muscle has the fastest myosin ATPase activity. D)Smooth muscle receives neural input from the somatic nervous system. B)Actin and myosin generate force through the crossbridge cycle. Increased medial smooth muscle cell length is responsible for vascular hypertrophy in young hypertensive rats ... the volume of the medial wall and lumen, numerical density of smooth muscle cell nuclei in the medial layer, and smooth muscle cell and nuclear length were measured. ... and their total number per 100 microm length were similar ...There are two types of smooth muscle: multiunit and unitary. Click and drag each label into the appropriate category based on whether it pertains to multiunit smooth muscle, unitary smooth muscle, or both. Multiunit: - contract individually. - constricts the pupil. - assists in focusing light on the retina.The nuclei are centrally situated like that of smooth muscle. Cardiac muscle sarcoplasm has a great amount of mitochondria to meet the energy demands. Similar to the skeletal muscle, cardiac muscle cells have an invaginating network of T-tubules and sarcoplasmic reticulum.Check all that are characteristics of cardiac muscle. - Cells are long and cylindrical. - Cells are short and branching. - Cells have multiple nuclei at the periphery of the cell. - Cells have one or two nuclei in the center of the cell. - They are composed of thick and thin filaments. - The functional contractile unit is the sarcomere.Study with Quizlet and memorize flashcards containing terms like Smooth muscle and cardiac muscle are similar in that they both A. are under involuntary control. B. are striated. C. are widely distributed in the body. D. have multiple nuclei. E. are under voluntary control., ATPase is found in A. F-actin strands. B. G-actin globular units. C. myosin heads. D. tropomyosin grooves. E. troponin ...INTRODUCTION. Age is the largest risk factor for developing sarcopenia - a loss of skeletal muscle mass and function [].Individuals over the age of 50 typically lose ~1% of muscle mass per year [2, 3].Currently, physical activity appears to be the only therapy for sarcopenia, but its effectiveness declines with advanced age [4, 5], and is only …Which of the following is a characteristic of smooth muscle? a) It can be controlled voluntarily. b) Smooth muscle cells contain actin and myosin. c) Muscle contraction does not depend on calcium ions. d) It has striations and sarcomeres. b) Smooth muscle cells contain actin and myosin. Which type of contraction causes a skeletal muscle to shorten?This muscle keeps the fluids, blood, and nutrients functioning properly and moving to the proper locations throughout the body. The intestinal glands and the villus absorb food. Slide 1: Muscle- Skeletal Longitudinal Section and Slide 2: Muscle-Skeletal Cross Section Yes, there are striations for both. Many nuclei for both muscles.Oct 4, 2019 · Smooth Muscle Definition. Smooth muscle is a type of muscle tissue which is used by various systems to apply pressure to vessels and organs. Smooth muscle is composed of sheets or strands of smooth muscle cells. These cells have fibers of actin and myosin which run through the cell and are supported by a framework of other proteins. The appearance, or visual texture, of smooth muscle varies dramatically depending on the orientation of the fibers with respect to the plane of section. Note especially the appearance of smooth muscle nuclei. When cut in longitudinal section, smooth muscle nuclei appear very long and sometimes wiggly (due to contraction).smooth muscle cell. flat shape w/ elongated nucleus; on wall of digestive organs, blood vessels, urinary bladder. skeletal muscle cell. striations, many nuclei, fibrous shape; in muscle attached to bone. motor neuron/nerve cell. send electrical signals for communication to maintain homeostasis; star shaped.Explain the role of muscles in locomotion. Muscle cells are specialized for contraction. Muscles allow for motions such as walking, and they also facilitate bodily processes such as respiration and digestion. The body contains three types of muscle tissue: skeletal muscle, cardiac muscle, and smooth muscle (Figure 1). Figure 1.An individual smooth muscle cell is very thin and tapers to its ends. Though not visible in this image, each cell has an oval nucleus in the center. The lower image shows smooth muscle layers of the intestinal wall. In the inner layer, the smooth muscle cells are cut in longitudinal section. The oval nuclei are stained purple.The number of nuclei in the muscle bundle was determined, and mean cell size was estimated by dividing the total area of each muscle bundle by the number of nuclei in that bundle, and was ... Cardiac muscle cells have many nuclei. Skeletal muscle cells are long and cylindrical with many nuclei. Cardiac muscle cells are found in the heart and large blood vessels. Smooth muscle cells have T tubules. Study with Quizlet and memorize flashcards containing terms like All muscle cells contain striations., Smooth muscle _____., Under a microscope you observe a tissue that appears to have long fibers that appear striated. The nuclei are pushed off to the side of the fibers. The tissue looks very vascular.The smooth muscle action is involuntary. Slide 1: Muscle- Skeletal Longitudinal Section and Slide 2: Muscle-Skeletal Cross Section There are striations across the width of the intestines. There are multiple nuclei. The muscle fibers have a long thread-like shape.It’s easy to exercise the muscles you can see—your biceps, your quads—but there are more muscles in your body than just the big ones. We’ve talked before about the muscles in your ...Why are smooth muscles called involuntary muscles?in what way they are different from striated muscles with respect to number of nuclei See answers Advertisement Advertisement nekabarizina nekabarizina Answer: Smooth muscles are present in iris of eye.Muscle cells that are short in length and have centrally located nuclei. Smooth muscle cells. Function of muscle. Produce movement, pumping blood. Striated long unbranched and multinucleated. Skeletal muscle. Outermost layer of connective tissue surroundingntye skeletal muscle. Epimysium. Composed primarily of actin and myosin.Cellular aspects of smooth muscle function (1997): 1-47. Terasaki, Asako Goi, et al. "A high molecular mass protein isolated from chicken gizzard: its localization at the dense plaques and dense bodies of smooth muscle and the Z-disks of skeletal muscle." Journal of cell science 108.3 (1995): 857-868. Wray, Susan, and Theodor …a. The rate of chemical reactions increases in muscle fibers during contraction, so the rate of heat production also increases. b. Muscle contraction generates pyrogens which reset the body's internal thermostat to a higher temperature. c. Muscle activity directs more warm blood to the muscles away from the central core causing a cooling effect ...The number of nuclei in each muscle cell is typically multiple, as each cell is formed by the fusion of multiple myoblasts during development. What is the composition of skeletal muscles? The size, shape, and arrangement of muscle fibers can vary depending on the type of muscle.Muscle tissue arises from embryonic mesoderm. Somites give rise to myoblasts and fuse to form a myotube. The nucleus of each contributing myoblast remains intact in the mature skeletal muscle cell, resulting in a mature, multinucleate cell. Satellite cells help to repair skeletal muscle cells. Smooth muscle tissue can regenerate from stem cells ...There are two types of smooth muscle: multiunit and unitary. Click and drag each label into the appropriate category based on whether it pertains to multiunit smooth muscle, unitary smooth muscle, or both. Multiunit: - contract individually. - constricts the pupil. - assists in focusing light on the retina.Complete (fused) tetanus. Put the following in order of largest to smallest: a. myofibril. b. muscle fiber. c. fascicle. d. thick filament. c, b, a, d. We have an expert-written solution to this problem! An increase in the force generated by a muscle is achieved by the __________ of more motor units.Skeletal muscle cells are multinucleated with many nuclei, while smooth muscle cells have a single nucleus, So the correct option is D. skeletal: multiple, smooth: 1. Explanation: The correct answer to the question is D. skeletal: multiple, smooth: 1. Skeletal muscle cells are characterized by being long and fibrous, and they form from the ...The Muscle Aging Cell Atlas presents approximately 200,000 single-cell and single-nuclei transcriptomes from 17 human donors across different ages, uncovering mechanisms of aging in muscle stem ...
(The full length of smooth muscle nuclei is only apparent when the plane of section is perfectly aligned with the long axis of the cells.) A very small bundle of smooth muscle can be particularly inconspicuous when cut in cross section. In that case, the cell nuclei appear as small round dots whose apparent size (about 3-4µm) and consistent .... Driver's license greeley colorado
Again, try to resolve mitochondria . SMOOTH MUSCLE ... In this section smooth muscle and skeletal muscle are both present. ... Observe the centrally located nuclei ... Name the number of nuclei and location of the nuclei in each type of muscle cell? Skeletal - many, peripheral Cardiac - one or two, central Smooth - one, central What type of muscle has highly organized SR which surrounds each myofibril? Study with Quizlet and memorize flashcards containing terms like All muscle cells contain striations., Smooth muscle _____., Under a microscope you observe a tissue that appears to have long fibers that appear striated. The nuclei are pushed off to the side of the fibers. The tissue looks very vascular.Where is the nuclei in skeletal muscle? Updated: 9/7/2023. Wiki User. ∙ 8y ago. Best Answer. the center.Note that each cell contains large numbers of nuclei. Cross striations can be seen, and are due to the structure of the sarcomere. A sarcomere consists of the structures between two Z lines. You should recognize: ... Smooth muscle may be studied using slide 029-1 smooth muscle ...Pericytes allow smooth muscle cells to regenerate and repair much more readily than skeletal and cardiac muscle tissue. Similar to skeletal muscle tissue, cardiac muscle does not regenerate to a great extent. Dead cardiac muscle tissue is replaced by scar tissue, which cannot contract. As scar tissue accumulates, the heart loses its ability to ...An individual smooth muscle cell is very thin and tapers to its ends. Though not visible in this image, each cell has an oval nucleus in the center. The lower image shows smooth muscle layers of the intestinal wall. In the inner layer, the smooth muscle cells are cut in longitudinal section. The oval nuclei are stained purple.Skeletal muscle also has multiple nuclei present in a single cell. Smooth muscle tissue occurs in the walls of hollow organs such as the intestines, stomach, and urinary bladder, and around passages such as the respiratory tract and blood vessels. ... The primary variable determining force production is the number of myofibers within the muscle ...We independently assessed the DNA content in VL muscles by calculating ploidy numbers in muscle nuclei based on Hoechst fluorescence intensities in diploid adult muscle progenitor cells (AMPs; Figures 2B, 2D–2G, S2A, and S2B). On average, VL3 muscles contained a total of 614 ± 153 copies, and VL4 muscles contained a total of 386 ± 96 …Figure 15.3.2 15.3. 2: Muscle type 1) Skeletal muscle cells are long tubular cells with striations (3) and multiple nuclei (4). The nuclei are embedded in the cell membrane (5) to be just inside the cell. This type of tissue occurs in the muscles that are attached to the skeleton.Smooth Muscle Definition. Smooth muscle is a type of muscle tissue which is used by various systems to apply pressure to vessels and organs. Smooth muscle is composed of sheets or strands of smooth muscle cells. These cells have fibers of actin and myosin which run through the cell and are supported by a framework of other proteins.Smooth Muscle. Smooth muscle is made up of cells that contain a single central nucleus. The cells stick together and are connected by specialised cell junctions, called gap junctions. The cells are spindle shaped, and the nucleus is central. This diagram shows a few of the cells that can be seen in the stained section below..
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