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Muscle Tissue
types, characteristics
11
Anatomy
Undergraduate 1
11/06/2010

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Term
Skeletal muscle
Definition
voluntary striated muscle that is usually attached to one or more bones
Term
Striations
Definition
alternating light and dark transverse bands
Term
Sarcolemma
Definition
plasma membrane of a muscle fiber
Term
Sarcoplasm
Definition
cytoplasm of the sarcolemma, it is occupied mainly by long protein bundles called myofibrils.
Term
Myofibrils
Definition
long protein bundles of the sarcoplasm
Term
Glycogen
Definition
starch-like carbohydrate that provides energy for the cell during heightened levels of excercise.
Term
Myoglobin
Definition
the red pigment that stores oxygen until needed for muscular activity
Term
Myoblasts
Definition
several stem cells that fuse to produce each muscle fiber, with each myoblast contributing a nucleus to the mature fiber.
Term
Satellite cells
Definition
unspecialized myoblasts between the muscle fiber and endomysium
Term
Sarcoplasmic Reticulum
Definition
the smooth endoplasmic reticulum here, forms a network around each myofibril
Term
Sarcomere
Definition
the funtional contractile unit of the muscle fiber.
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