Blood that is poor in oxygen returns to the _______.
A) left atrium
B) right atrium
C) left ventricle
D) right ventricle
Correct Answer:
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Q20: Platelets, also called _, are tiny fragments
Q21: The left ventricle pumps blood into the
Q22: _ are cells that ingest bacteria and
Q23: The _ is the volume of blood
Q24: _ circulation connects the heart and lungs.
A)
Q26: The period of relaxation is known as
Q27: The volume of blood pumped by one
Q28: The _ is the largest organ of
Q29: Parasympathetic nerves release the neurotransmitter _, which
Q30: The smallest branches of an artery are
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