Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
21 Cards in this Set
- Front
- Back
|
long, cylindrical cells that make up skeletal muscle
|
fibers
|
|
|
skeletal muscle cells are ___nucleate
|
multi
|
|
|
plasma membrane of skeletal muscle cells
|
sarcolemma
|
|
|
nuclei are pushed peripherally by longitudinally arranged ____ which nearly fill the sarcoplasm
|
myofibrils
|
|
|
light bands along length of myofibrils
|
I bands
|
|
|
dark bands along length of myofibrils
|
A bands
|
|
|
composed of two contractile proteins; make up myofibrils
|
myofilaments
|
|
|
the two contractile proteins
|
myosin, actin
|
|
|
the contractile units of the muscle; extends from one I band to the next along the length of myofibrils
|
sarcomeres
|
|
|
Fibers>____>_____(actin and myosin)
|
myofibrils, myofilaments (actin and myosin)
|
|
|
each muscle fiber is enclosed in a delicate areolar connective tissue sheath called
|
endomysium
|
|
|
several endomysium sheathed muscle fibers are wrapped by a collagenic membrane called
|
perimysium
|
|
|
a bundle of fibers wrapped by a collagenic membranous perimysium
|
fascicle
|
|
|
a large number of fascicles are bound together by an overcoat of dense connective tissue called an ____ which sheathes the entire muscle.
|
epimysium
|
|
|
epimysia blend into the _____, still coarser sheets of dense connective tissue that bind muscles into functional groups, and into strong, cordlike _____ and sheetlike ______.
|
deep fascia, tendons, aponeuroses
|
|
|
myofilaments are organized into
|
myofibrils
|
|
|
myofibrils are organized into
|
muscle fibers
|
|
|
muscle fibers are organized into
|
endomysium
|
|
|
endomysium are organized into
|
perimysium
|
|
|
perimysium coated bundle of fibers =
|
fascicle
|
|
|
fascicles are organized into
which sheathes the entire muscle |
epimysium
|
