BI121 GRCC SPOs: Muscular System
Questions and Answers Latest Version
Graded A+
Which type of muscle tissue is under voluntary control?
✔✔Skeletal muscle
Which protein binds calcium to initiate muscle contraction?
✔✔Troponin
Which type of muscle is found in the walls of hollow organs?
✔✔Smooth muscle
Which connective tissue layer surrounds an entire muscle?
✔✔Epimysium
Which structure transmits action potentials deep into muscle fibers?
✔✔T-tubules
1
,Which ion is released from the sarcoplasmic reticulum to trigger contraction?
✔✔Calcium
Which protein covers binding sites on actin during muscle relaxation?
✔✔Tropomyosin
Which neurotransmitter is released at the neuromuscular junction?
✔✔Acetylcholine
Which muscle contraction results in muscle shortening?
✔✔Concentric contraction
Which structure stores calcium in muscle fibers?
✔✔Sarcoplasmic reticulum
Which muscle contraction occurs without any change in muscle length?
✔✔Isometric contraction
2
, Which enzyme breaks down acetylcholine at the neuromuscular junction?
✔✔Acetylcholinesterase
Which type of muscle fiber is adapted for endurance activities?
✔✔Slow-twitch fibers
Which connective tissue surrounds individual muscle fibers?
✔✔Endomysium
Which muscle contraction results in muscle lengthening under tension?
✔✔Eccentric contraction
Which protein is directly responsible for the power stroke in muscle contraction?
✔✔Myosin
Which energy system provides quick bursts of energy using creatine phosphate?
✔✔Phosphagen system
3
Questions and Answers Latest Version
Graded A+
Which type of muscle tissue is under voluntary control?
✔✔Skeletal muscle
Which protein binds calcium to initiate muscle contraction?
✔✔Troponin
Which type of muscle is found in the walls of hollow organs?
✔✔Smooth muscle
Which connective tissue layer surrounds an entire muscle?
✔✔Epimysium
Which structure transmits action potentials deep into muscle fibers?
✔✔T-tubules
1
,Which ion is released from the sarcoplasmic reticulum to trigger contraction?
✔✔Calcium
Which protein covers binding sites on actin during muscle relaxation?
✔✔Tropomyosin
Which neurotransmitter is released at the neuromuscular junction?
✔✔Acetylcholine
Which muscle contraction results in muscle shortening?
✔✔Concentric contraction
Which structure stores calcium in muscle fibers?
✔✔Sarcoplasmic reticulum
Which muscle contraction occurs without any change in muscle length?
✔✔Isometric contraction
2
, Which enzyme breaks down acetylcholine at the neuromuscular junction?
✔✔Acetylcholinesterase
Which type of muscle fiber is adapted for endurance activities?
✔✔Slow-twitch fibers
Which connective tissue surrounds individual muscle fibers?
✔✔Endomysium
Which muscle contraction results in muscle lengthening under tension?
✔✔Eccentric contraction
Which protein is directly responsible for the power stroke in muscle contraction?
✔✔Myosin
Which energy system provides quick bursts of energy using creatine phosphate?
✔✔Phosphagen system
3
