When a skeletal muscle fiber contracts:
A) Z discs move farther apart while the A bands shorten.
B) the H zone and I bands narrow.
C) the A bands shorten while the I bands lengthen.
D) the H zone narrows while the I bands widen.
Correct Answer:
Verified
Q2: What do skeletal muscle tissue and cardiac
Q3: What part of the myofibril shortens to
Q4: The storage and release of calcium ions
Q5: Which protein does NOT belong in a
Q6: What is the functional contractile unit of
Q8: What characteristic is NOT descriptive of cardiac
Q9: The degree to which a muscle cell
Q10: A triad consists of:
A) actin filaments, troponin,
Q11: Where should most of the potassium ions
Q12: The Na+/K+ pump helps a muscle cell
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