FSM EXAM 2 QUESTIONS AND 100%
CORRECT ANSWERS!!
connective tissue ____ and ____ muscular tissue
surrounds and protects
fascia is
a dense sheet or broad band of irregular connective tissue that supports and surrounds muscles
the connective tissue surrounding muscles (fascia) allows
free movement of muscles, carries nerves, blood vessels, and lymphatic vessels
what are the three layers of fascia in an muscle?
-epimysium
-perimysium
-endomysium
epimysium is the
outer layer, encircling the entire muscle length
perimysium
surrounds groups of 10 to 100 or more muscle fibers (separates them into bundles - fascicles)
what are the bundles of muscle fibers called that perimysium separates?
fascicles
endomysium
penetrates the interior of each fascicle and separates individual muscle fibers from one another
what is the order of fascia and muscle fibers inside the muscle from deep (inside) to
superficial (outside)?
-filament
-myofibril
, -muscle fiber
-endomysium
-fascicle
-perimysium
-bundles of fascicles
-epimysium
what is the most important component of a skeletal muscle?
muscle fiber
sarcolemma is the
plasma membrane of a muscle cell
what are transverse tubules (t-tubules)?
thousands of invaginations of the sarcolemma tunnel in from the surface
t-tubules are filled with
interstitial fluid
what travels along the sarcolemma and through the t-tubules?
action potentials
the t-tubules ensure that the action potential
excites all parts of the muscle fiber (because they run from the membrane (sarcolemma) to
deeper in the fiber)
myofibrils are the
contractile organelles of skeletal muscle fiber
the sarcoplasmic reticulum encircles
each myofibril
what is the sarcoplasmic reticulum?
CORRECT ANSWERS!!
connective tissue ____ and ____ muscular tissue
surrounds and protects
fascia is
a dense sheet or broad band of irregular connective tissue that supports and surrounds muscles
the connective tissue surrounding muscles (fascia) allows
free movement of muscles, carries nerves, blood vessels, and lymphatic vessels
what are the three layers of fascia in an muscle?
-epimysium
-perimysium
-endomysium
epimysium is the
outer layer, encircling the entire muscle length
perimysium
surrounds groups of 10 to 100 or more muscle fibers (separates them into bundles - fascicles)
what are the bundles of muscle fibers called that perimysium separates?
fascicles
endomysium
penetrates the interior of each fascicle and separates individual muscle fibers from one another
what is the order of fascia and muscle fibers inside the muscle from deep (inside) to
superficial (outside)?
-filament
-myofibril
, -muscle fiber
-endomysium
-fascicle
-perimysium
-bundles of fascicles
-epimysium
what is the most important component of a skeletal muscle?
muscle fiber
sarcolemma is the
plasma membrane of a muscle cell
what are transverse tubules (t-tubules)?
thousands of invaginations of the sarcolemma tunnel in from the surface
t-tubules are filled with
interstitial fluid
what travels along the sarcolemma and through the t-tubules?
action potentials
the t-tubules ensure that the action potential
excites all parts of the muscle fiber (because they run from the membrane (sarcolemma) to
deeper in the fiber)
myofibrils are the
contractile organelles of skeletal muscle fiber
the sarcoplasmic reticulum encircles
each myofibril
what is the sarcoplasmic reticulum?
