These slides have been available as demonstrations in the laboratory. A review of their major differences will help in differentiating these tissues. All of the selected micrographs show the tissues cut to reveal the length of the muscle cells. The slides in the laboratory may have shown cross sections as well. All testing will be done with tissues cut as seen here. Available are:
MOTOR END PLATE
Smooth muscle cells are spindle shaped and uninucleate. (B).
Locations: walls of hollow organs, i.e. stomach, intestine, uterus, ureter
Functions: involuntary movement - i.e. churning of food, movement of urine from the kidney to the bladder, partuition
Skeletal muscle cells run the full length of a muscle. Line A show the width of one cell (fiber). Note the striations characteristics of this muscle type. These cells are multicellular, B marks one nucleus.
Location: muscles associated with the skeleton
Function: voluntary movement
Muscles are connected to bones by tendons. Bones are connected to other bones at their joints by ligaments.
Cardiac muscle cells branch, are striated, are uninucleate (B) and have intercalated discs (A).
Function: involuntary, rhythmic contraction
MOTOR END PLATE
Skeletal muscles (C) are stimulated by nerve impulses carried by motor neurons. The axon (A) that carries the impulse away from the nerve body ends on muscle fibers in little pads called motor end plates (B).
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This page was last updated in August, 1997.
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