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skeletal muscle - ANSWER ✔✔A muscle that is attached to the
bones of the skeleton and provides the force that moves the bones.
Location of skeletal muscle - ANSWER ✔✔in skeletal muscles
attached to bones or occasionally to skin
Excitability - ANSWER ✔✔ability to respond to stimuli
Conductivity - ANSWER ✔✔The ability of an object to transfer heat or
electricity to another object.
,Extensibility - ANSWER ✔✔ability to be stretched
Elasticity of muscle - ANSWER ✔✔Ability of muscle fibers to recoil
and resume their resting length after being stretched.
Contractibility - ANSWER ✔✔ability to shorten/contract
Sarcomere - ANSWER ✔✔Contractile unit of muscle (z disc to z disc)
Sarcolemma - ANSWER ✔✔muscle cell membrane
sarcoplasmic reticulum (SR) - ANSWER ✔✔organelle of the muscle
fiber that stores calcium
Z disc - ANSWER ✔✔coin-shaped sheet of proteins that anchors the
thin filaments and connects myofibrils to one another
M line - ANSWER ✔✔middle of sarcomere
A band - ANSWER ✔✔dark area; extends length of the thick
filaments
I band - ANSWER ✔✔light band, actin only
Zone of Overlap - ANSWER ✔✔where thick and thin filaments
overlap
Thick filaments - ANSWER ✔✔myosin
, Thin filaments - ANSWER ✔✔actin
contractile proteins in muscle - ANSWER ✔✔actin and myosin
structural proteins - ANSWER ✔✔proteins that form an organism's
physical attributes
regulatory proteins - ANSWER ✔✔tropomyosin and troponin
Microfilaments - ANSWER ✔✔Long, thin fibers that function in the
movement and support of the cell
Myofibrils - ANSWER ✔✔Microscopic protein filaments that make up
muscle cells.
muscle fiber - ANSWER ✔✔muscle cell
muscle fassicle - ANSWER ✔✔bundle of muscle fibers
Epimysium - ANSWER ✔✔surrounds entire muscle
Perimysium - ANSWER ✔✔Connective tissue surrounding a fascicle
Endomysium - ANSWER ✔✔Connective tissue surrounding a muscle
fiber
steps of neuromuscular junction - ANSWER ✔✔1. action potential
generates release of acetylcholine
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