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BMS 208
exam 2 anatomy of a muscle
19
Anatomy
Undergraduate 2
02/12/2009

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Term
Epimysium
Definition
covers the entire gross muscle.
Term
Perimysium
Definition
seperates the skeletal muscle into smaller compartments. Each compartment containing a bundle of fibers, known as a facsicle
Term
Fascicle
Definition
A bundle of muscle fibers (cells).
Term
Endomysium
Definition
Thin sheet of connective tissue that covers each individual muscle fiber, however, it is not the sarcolemma, or cell membrane.
Term
Sarcolemma
Definition
Cell membrane of a muscle cell.
Term
tendon
Definition
connective tissue that connects muscle to bone.
Term
ligament
Definition
connects muscle to muscle.
Term
Muscle fiber
Definition
A muscle cell. Multinucleated
Term
sarcoplasm
Definition
cytoplasm of a muscle cell.
Term
t-tubules
Definition
pores of a muscle cell.
Term
myofibril
Definition
smaller than a muscle fiber
Term
Thick Myofilament
Definition
Chiefly composed of Myosin
Term
Thin Myofilament
Definition
Cheifly composed of actin
Term
Sarcoplasmic Reticulum
Definition
Pumps calcium ions when a muscle is contracted
Term
Terminal Cysternae
Definition
Ends of the SR, and make up the Triad with the SR and T tubules.
Term
Sarcomere
Definition
Functional unit of a muscle cell
Term
M line
Definition
Middle, composed of cheifly Myosin (Thick myofilaments)
Term
tropomyosin
Definition
actin binding protein
Term
troponin
Definition
consists of 3 subunits.
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