Teas 7 Muscle System Exam -Questions with Correct Answers/
Verified/ Latest Update (2024/2025)
function of muscle system - ✔✔movement in the body sustaining posture and body
position.
3 types of muscle tissue - ✔✔skeletal, cardiac, smooth
Excitability - ✔✔electric gradient
electric gradient - ✔✔a difference in electric charge across a cell membrane
contraction - ✔✔the process of becoming smaller
elongate - ✔✔to make longer relaxed
skeletal muscle - ✔✔voluntary muscles that work in pairs to move. Composed of muscle
fibers (cells) that are bound together in parallel bundles AKA striated muscles due to their
striped appearance
smooth muscle - ✔✔Involuntary muscle found inside many internal organs of the body.
visceral, non striated. also found in sphincters or valves that control various openings of
through the body.
cardiac muscle - ✔✔Involuntary muscle tissue found only in the heart.
action potential - ✔✔when an action potential (electrical signal) reaches a muscle fiber,
calcium is released. calcium ions bind to the myocin and actin which assists in the binding of
the myosin heads of the thick filaments to the actin molecules of the thin filaments.
ATP (adenosine triphosphate) - ✔✔released from the glucose provides the energy necessary
for the contraction and relaxation.
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