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Multiple Choice Quiz
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1
The membranous covering of the heart is the _________, which includes a loosely fitting sac composed of an inner ________ and an outer _________.
A)epicardium; parietal pericardium; fibrous pericardium
B)endocardium; parietal pericardium; epicardium
C)epicardium; fibrous pericardium; parietal pericardium
D)pericardium; parietal pericardium; fibrous pericardium
2
Blood returning to the heart from the lungs enters the ________, and blood is pumped from the heart to the lungs by the ________.
A)left atrium; left ventricle
B)left atrium; right ventricle
C)right atrium; right ventricle
D)right atrium; left ventricle
3
The ________ valve prevents the backflow of blood from the left ventricle into the left atrium.
A)bicuspid atrioventricular
B)aortic semilunar
C)tricuspid atrioventricular
D)pulmonary semilunar
4
During ________, the atrioventricular valves are closed and the semilunar valves are open.
A)atrial systole
B)ventricular diastole
C)ventricular systole
D)atrial and ventricular diastole
5
The ________ pumps blood into the aorta, and the _________ receives blood from the vena cavae.
A)right ventricle; right atrium
B)right ventricle; left atrium
C)left ventricle; left atrium
D)left ventricle; right atrium
6
The ________ rhythmically forms impulses initiating each heartbeat and transmits these inpulses to the _________.
A)A-V node; A-V bundle
B)S-A node: A-V node
C)A-V node; S-A node
D)S-A node; A-V bundle
7
Heart rate regulation is primarily controlled by the cardiac control center located in the
A)hypothalamus.
B)cerebrum.
C)medulla oblongata.
D)pons.
8
The heart rate is increased by impulses from _________ neurons and decreased by impulses from _________ neurons.
A)sympathetic; parasympathetic
B)parasympathetic; sympathetic
C)afferent; efferent
D)motor; sensory
9
A precapillary sphincter muscle controls the flow of blood from
A)capillary to venule.
B)arteriole to capillary.
C)artery to arteriole.
D)capillary to arteriole.
10
If excessive fluid retention increases blood volume, blood pressure is likely to
A)decrease.
B)be unaffected.
C)increase.
D)alter the heart rate.
11
The artery carrying blood from the aorta to most of the small intestine is the
A)celiac.
B)superior mesenteric.
C)inferior mesenteric.
D)common iliac.
12
The sequence of arteries supplying most of the blood to either knee is
A)aorta – common iliac – external iliac – femoral – popliteal.
B)aorta – common iliac – internal iliac – femoral – popliteal.
C)aorta – internal iliac – deep femoral – anterior tibial –popliteal.
D)aorta –common iliac – deep femoral – anterior tibial – popliteal.
13
The sequence of veins draining most of the blood from either side of the brain is
A)external jugular – common jugular – superior vena cava – right atrium.
B)external jugular – brachiocephalic – superior vena cava – right atrium.
C)internal jugular – superior vena cava – right atrium.
D)internal jugular – brachiocephalic – superior vena cava – right atrium.
14
The sequence of veins returning blood from the stomach is
A)gastric – liver – hepatic portal – inferior vena cava – right atrium.
B)gastric – hepatic – liver – inferior vena cava – right atrium.
C)gastric – hepatic portal – liver – hepatic – inferior vena cava – right atrium.
D)gastric – inferior vena cava – right atrium.
15
An increase in the frequency of sympathetic impulses to arteries and arterioles, produces ________ , which ________ blood pressure and velocity.
A)vasoconstriction; increases
B)vasoconstriction; decreases
C)vasodilation; increases
D)vasodilation; decreases





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