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The cardiac muscle is supplied with nutrients from the blood within the heart itself.

A) True
B) False

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If your pulse is 70 beats per minute,how fast is your heart beating?


A) 140 beats per minute
B) 35 beats per minute
C) 70 beats per minute

D) All of the above
E) A) and C)

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Which part of the brain contains the cardiac control center?


A) cerebrum
B) medulla oblongata
C) cerebellum
D) pons
E) frontal lobe

F) B) and E)
G) B) and D)

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Normal blood pressure is 120/80.What is the top number called and what is happening in the heart?


A) systolic pressure, ejection of blood from the heart
B) diastolic pressure, ejection of blood from the heart
C) systolic pressure, ventricles are relaxing
D) diastolic pressure, ventricles are relaxing
E) diastolic pressure, atria are contracting, ventricles are relaxing

F) A) and B)
G) C) and D)

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What structure within a capillary bed shunts blood from the arteriole to the venule?


A) precapillary valve
B) endothelium
C) precapillary sphincter
D) pericardium
E) shunt valve

F) A) and E)
G) D) and E)

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Gas exchange is the only function of blood.

A) True
B) False

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Which of the following could be used to take a pulse?


A) radial vein
B) radial artery
C) inferior vena cava
D) superior vena cava
E) renal capillaries

F) A) and B)
G) A) and C)

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What is the function of valves in the veins?


A) increase the rate of blood flow
B) prevent the backward flow of blood
C) regulation of blood pressure
D) oxygenate the blood
E) remove debris from the blood

F) A) and B)
G) A) and C)

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The walls of veins are thinner,so they cannot expand as greatly as arteries can.

A) True
B) False

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Lisa receives a dose of epinephrine.What does this do to her heart rate?


A) increases it
B) decreases it
C) stops it
D) does not alter it

E) A) and B)
F) All of the above

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If a person is dehydrated,how will this affect nutrient exchange at the capillaries?


A) It will have no effect.
B) Water will not leave the arterial end of the capillary and enter the tissues.
C) Oxygen will not leave the capillary and enter the tissues.
D) Carbon dioxide will not leave the tissues and enter the capillary.
E) Plasma proteins will be able to leave the capillary and enter the tissues.

F) C) and D)
G) B) and E)

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Which of the following blood vessels are the only ones small,thin,and porous enough to exchange substances at the tissue level of organization?


A) arterioles
B) capillaries
C) venules
D) small arteries
E) veins

F) B) and C)
G) A) and E)

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What drug may protect against having a first heart attack?


A) acetominophen
B) aspirin
C) ACE
D) t-PA
E) beta-blockers

F) All of the above
G) A) and D)

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Dr.Ferguson explained that in a condition known as situs inversus,the internal organs are reversed in their orientation.Thus,the apex of the heart would be oriented to the ___.


A) middle
B) right
C) left
D) front
E) back

F) A) and E)
G) None of the above

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What is the instrument called that is used to measure blood pressure?


A) stethoscope
B) CPR
C) sphygmomanometer
D) ECG
E) AED

F) C) and E)
G) B) and D)

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At any one time,where is the majority of the blood found in the body?


A) veins
B) lungs
C) lymphatic vessels
D) capillaries
E) arteries

F) A) and D)
G) B) and C)

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The "lub" sound of the "lub-dup" heart beat is due to what?


A) the closing of the AV valves
B) the closing of the semilunar valves
C) the right atrium contracting
D) the left atrium contracting
E) the relaxation of both atria

F) C) and E)
G) A) and D)

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What is the largest artery in the systemic circuit?


A) femoral
B) carotid
C) pulmonary
D) hepatic
E) aorta

F) B) and D)
G) B) and C)

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What are known as the "strings of the heart?"


A) cingulated pectorale
B) chordae tendinae
C) corpus albicans
D) corpus callosum
E) choroid plexus

F) C) and E)
G) A) and C)

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Blood pressure plays a major role in returning blood to the heart.

A) True
B) False

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