The upper chambers of the mammalian heart are the:
A) Ventricles
B) Arteries
C) Vascular cavities
D) Atria
E) Sinuses
Correct Answer:
Verified
Q13: The myocardium is the:
A)Sac surrounding the heart
B)The
Q14: Vertebrates with a three-chambered heart include:
A)Fish
B)Amphibians
C)Birds
D)Mammals
E)Annelids
Q15: A heartbeat begins in the:
A)Atrioventricular valve
B)Atrioventricular node
C)Sinoatrial
Q16: The semilunar valves:
A)Prevent arterial blood from reentering
Q17: The chamber of the heart that is
Q19: Cardiac output may increase by:
A)A greater than
Q20: The large vessels that carry blood to
Q21: The major vein receiving blood draining from
Q22: The cellular components of blood that destroy
Q23: The cellular fragments that help in initiating
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