biomechanics of skeletal muscle tissue Flashcards
muscle fiber (my-fiber)
muscle cell
what is sarcomeres
section of actin/myosin/titin fibers with boundaries at each end called Z discs
characteristics and purpose of deep fascia
- dense irregular CT
- organizes and protects the muscles
what is under the deep fascia
epimysium
characteristics and purpose of epimysium
- deep to the deep fascia
- encases entire skeletal muscle
- protect/organize the muscles
- stores energy
what surrounds the fascicle
perimysium
perimysium
- dense irregular CT
- organize the fascicles
- protects neuromuscular bundles
- passive stretch stores energy to increase force production
what surrounds the muscle fiber
endomysium
functions of endomysium
protects/organize: stores energy
skeletal muscle contraction is classified as
voluntary muscles
neurons that stimulate muscle contraction are called
motor neuron
function of axon
transmits a nerve impulse to a muscle fiber
route of axon
travel through epimysium and perimysium, and enters the endomysium, where it terminates on a motor end plate and sends a nerve impulse to an individual muscle fiber
true or false: one axon innervates one fiber?
false: it innervates multiple fibers
a motor unit consist of
- one motor neuron
- muscle fibers it controls
- neuromuscular junctions associated with each axon
