How can we help?

You can also find more resources in our Help Center.

22 terms

muscular system; skeletal muscle tissue

STUDY
PLAY
branched
shape of cardiac cell
connective tissue
what attaches muscles to bone
fascicles
the whole muscle is composed of muscle cells (fibers) grouped into bundles called
epimysium
CT covering surrounding the whole muscle
perimysium
CT covering surrounding the fascicles
endomysium
CT covering surrounding the muscle cell
sarcolemma
plasma membrane of muscle cell
sarcoplasmic reticulum
endoplasmic reticulum in muscle cell
cytosol
intracellular fluid around organellea
terminal cisternae
part of endoplasmic reticulum-stores calcium ions
t-tubules
part of sarcolemma-carries action potential
triad
t-tubule + 2 terminl cisternae
myofilaments
contractile proteins that make up myofibrils
thin
myofibril composed of actin
thick
myofibril composed of myosin
a band
dark band in myofilament
i band
light band in myofilament
z disc
protein disc that anchors thin filaments and connects adjacent myofibrils
h zone
between a bands
m line
protein fibers connect neighboring thick filaments
sarcomere
contractile unit of a muscle cell
muscle, fascicle, muscle fiber, myofibril, myofilament
put in order from largest to smallest: fascicle, muscle fiber, myofilament, myofibril, muscle