microscopic anatomy
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12 Terms
what do muscle cells look like?
long & cylindrical
multi-nucleate
striations
muscle fibers
muscle cells
fascicle
bundle of muscle fibers
endomysium
delicate connective tissue surrounding each muscle fiber
perimysium
connective tissue encasing each fascicle
epimysium
“overcoat” of connective tissue, covers the entire muscle
many fascicle bound together
sarcolema
cell membrane of a muscle cell
contains a sugar for anchoring
myofibrils
contains ribbon-like organelles, gives striped appearance (dark & light)
allows for contractions
sarcomeres
tiny chains of contractile myofibrils arranged end to end
myofilaments
thread-like protein strands within sarcomeres
thick & thin
think filaments
made of myosin (protein)
contain enzyme to split ATP to generate power for muscle contractions
thin filaments
made of actin (protein)
Note 
Flashcards (43)