The maximum rate of contraction in normal cardiac muscle fibers is ________ per minute.
A) 80
B) 140
C) 200
D) 250
E) 300+
Correct Answer:
Verified
Q32: If the connection between the SA node
Q33: Folding of the valves in the wrong
Q34: The three layers of the heart wall
Q35: Cardiac muscle is similar to skeletal muscle
Q36: The marginal artery branches off the
A) right
Q38: Select the correct order of stimulation in
Q39: The first blood vessels to branch from
Q40: The _ circuit directly supplies blood to
Q41: When a chamber fills with blood and
Q42: The amount of blood the heart pumps
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