Multiple Choice
Asynchronous flight muscles in insects are able to achieve contractions in the range of 250-1000 Hz because
A) they have very fast Ca²⁺ ATPase pumps.
B) they have muscles that don't depend on Ca²⁺ regulation at all.
C) they have very high amounts of parvalbumin in the cytosol.
D) the TnC can rapidly change its affinity for Ca²⁺,leading to rapid contraction/relaxation cycles.
Correct Answer:
Verified
Correct Answer:
Verified
Q12: Microtubules are organized in cells with the
Q13: An _ contraction is one in which
Q14: The _ explains how the myosin head
Q15: Vertebrate striated muscles composed of twitch fibers
Q16: Skeletal muscle may be used in a
Q18: Smooth muscle,like striated muscle,utilizes Ca²⁺ as a
Q19: During which phase of an excitation-contraction cycle
Q20: In striated muscle,Ca²⁺ regulates contraction by interacting
Q21: Contractions can occur in striated muscle as
Q22: Most of the Ca²⁺ stored in the