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should anal sex hurt This video covers the topic: The cardiac muscle tissue is found in the myocardium and is responsible for the contraction of the... Watch & learn more!

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free porn movie youtube Cardiac muscle is composed of branched, mononuclear cells (occasionally bi-nucleate) with the nuclei located in the center of the cell. The cells show the same striations as skeletal muscle. The cells show the same striations as skeletal muscle.

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big black porn stars Purkinje fibers are much faster conducting than regular cardiac muscle fibers, with which they make contact via gap junctions Coronary vessels: See Coronary vessels

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pussy in my lap Together, these substances give support and strength to the muscle cells, create elasticity in cardiac muscle, and keep the muscle cells hydrated by binding water molecules. The matrix in immediate contact with the muscle cells is referred to as the basement membrane, mainly composed of type IV collagen and laminin.

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eating my sister's pussy Cardiac muscle histology Image of primate heart stained with Alizarin blue. Red Blood Cells (orange cells) Cardiac Muscle Cells (blue) Cardiac muscle cells are cut longitudinally.

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the biggest penis porn Human Structure Virtual Histology. Muscle : Cardiac Muscle. The myocardium of the heart wall is composed of cardiac muscle fibers arranged as interwoven, spiral layers aligned with the long axis of the heart ventricles. Cardiac muscle fibers are striated like skeletal muscle fibers, and the contraction cycle is similar to that of skeletal muscle. There are some key structural differences that ...

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video clips sex free Cardiac muscle also has cross-striations and is composed of elongated, often branched cells bound to one another at structures called intercalated discs that are unique to cardiac muscle. Contraction is involuntary, vigorous, and rhythmic.

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fat naked women videos This type of muscle is only found in the heart and is involuntarily controlled. Like skeletal muscle, cardiac muscle fibers are striated; however, they contain only 1 nucleus per fiber. Cardiac muscle also contains intercalated discs, which allow adjacent muscle fibers to maintain an electrical connection. This is essential for heart ...

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