Cardiac muscle fibers are joined at their ends by dense bands called _______.
A) Purkinje fibers
B) intercalated disks
C) AV fibers
D) cardiac disks
Correct Answer:
Verified
Q17: Cardiac output is the volume of blood
Q18: Each cardiac cycle begins with _.
A) contraction
Q19: The innermost layer of the heart, the
Q20: Sensory receptors in blood vessels and in
Q21: A heart rate of more than 100
Q22: From the AV node, the impulse spreads
Q24: The period of contraction in which blood
Q26: In _, the valve is thickened and
Q27: The valve between the right ventricle and
Q28: The greatest bulk of the heart wall
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