When the right ventricle contracts, the ________.
A. left atrium and left ventricle always relax simultaneously
B. right atrium always relaxes simultaneously
C. right atrium may contract or relax
D. right atrium always contracts simultaneously
Answer: B
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A) pectinate muscles B) trabeculae carnae C) moderator band D) chordae tendinae
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A) pleura. B) peritoneum. C) pericardium. D) periosteum. E) perichondrium.
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A) cell bodies of CNS neurons B) cell bodies of PNS neurons C) axons of PNS neurons D) axons of CNS neurons E) dendrites of the PNS neurons