- | P a g e
APHY 101 FINAL/APHY101 FINAL EXAM QUESTIONS
BANK NEWEST 2025 ACTUAL EXAM COMPLETE 200
QUESTIONS AND CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) |ALREADY GRADED
A+||BRAND NEW!!/ IVY TECH
The neurotransmitter at the neuromuscular junction increases permeability of the muscle cell membrane to...-Sodium ions -Choline -Phosphate -Calcium ions - CORRECT ANSWER -Sodium ions
Choline formed from the breakdown of acetylcholine in the synaptic cleft is...-Ingested by macrophage cells in the synaptic cleft -Resorbed by the presynaptic terminal membrane -Absorbed into the muscle cell -Concentrated and stored in the synaptic cleft - CORRECT ANSWER-Resorbed by the presynaptic terminal membrane
- / 4
- | P a g e
Which region of the sarcomere does not change length between muscle relaxation and muscle contraction?-A band -Z disc -I band -H zone - CORRECT ANSWER -A band
The area between two Z discs is termed a...-H zone -A band -I band -Sarcomere - CORRECT ANSWER -Sarcomere
In a fully contracted sarcomere, the actin myofilaments...-Form the H zone -Disappear -Form a Z disc -Overlap - CORRECT ANSWER -Overlap
In a fully contracted sarcomere, the H zone... 2 / 4
- | P a g e
-Disappears -Is unchanged from a relaxed sarcomere -Becomes the total width of the sarcomere -Is widest - CORRECT ANSWER -Disappears
The I-band of a sarcomere is widest when a muscle is relaxed.-True -False - CORRECT ANSWER -True
Calcium ions released from the sarcoplasmic reticulum enter the...-T-tubules -Nucleus -Sarcolemma -Sarcoplasm - CORRECT ANSWER -Sarcoplasm
An action potential enters a muscle cell at the...-Nucleus -Sarcomere -Actin myofilaments 3 / 4
- | P a g e
-T-tubule - CORRECT ANSWER -T-tubule
Cross bridges form between binding sites on actin myofilaments and...-Tropomyosin -Myosin heads -Calcium ions -Troponin - CORRECT ANSWER -Myosin heads
Uncovering binding sites for myosin on actin myofilaments is involves troponin binding to...-Tropomyosin -Calcium ions -T-tubules -Phosphate - CORRECT ANSWER -Calcium ions
An action potential for a muscle cell is propagated along the...-Sarcoplasm -Sarcomere -Sarcolemma -Tropomyosin - CORRECT ANSWER -Sarcolemma
- / 4