Multiple Choice
Pacemaker activity
A) refers to spontaneous depolarizations of the membrane resulting from shifts in passive ionic fluxes accompanying automatic changes in channel permeability
B) refers to spontaneous depolarizations of the membrane due to cyclical changes in Na+-K+ pump activity
C) is characteristic of single-unit smooth muscle but not found in any other muscle type
D) refers to spontaneous depolarizations of the membrane resulting from shifts in passive ionic fluxes accompanying automatic changes in channel permeability, and is characteristic of single-unit smooth muscle but not found in any other muscle type
E) refers to spontaneous depolarizations of the membrane due to cyclical changes in Na+-K+ pump activity, and is characteristic of single-unit smooth muscle but not found in any other muscle type
Correct Answer:
Verified
Correct Answer:
Verified
Q13: The region between two Z lines is
Q124: Skeletal muscle fibers<br>A) have T tubules within
Q125: Which of the following statements about the
Q126: Complete each of the following statments.<br>The major
Q129: Muscle cells are the only cell types
Q131: Which is not characteristic of cross bridges?<br>A)
Q156: All cross bridges within a sarcomere stroke
Q259: During an isometric contraction, the muscle<br>A)maintains a
Q260: Increasing the number of recruited motor units
Q267: During muscle contraction, the A band becomes