QUESTIONS
Question 1
Which of the following supplies blood to parts of the intestinal tract?
- Phrenic arteries
- Superior mesenteric artery
- Middle sacral artery
- Lumbar artery
Question 2
When the ventricular walls contract,
- the mitral and tricuspid valves close.
- the mitral and tricuspid valves open.
- the mitral valve opens and the tricuspid valve closes.
- the tricuspid valve opens and the mitral valve closes.
Question 3
The skeleton of the heart consists of
- bone within the interatrial septum.
- fibrous connective tissue encircling the atrioventricular orifices.
- fibrous connective tissue in the endocardium.
- bone within the myocardium.
Question 4
The apical heartbeat is heard by listening between the fifth and sixth ribs about 7.5 cm left of the midline.
- True
- False
Question 5
The inner lining of the heart is the
- epicardium.
- pericardium.
- endocardium.
- myocardium.
Question 6
The external carotid arteries branch to structures in the
- face.
- all of the above.
- base of the skull.
- scalp.
Question 7
The loose-fitting sac around the heart is the
- endocardium.
- epicardium.
- visceral pericardium.
- fibrous pericardium.
Question 8
Which of the following is most life threatening?
- Ventricular fibrillation
- Atrial fibrillation
- Atrial flutter
- Ventricular flutter
Question 9
Which of the following is due to an aging cardiovascular system?
- The tunica interna thickens.
- The direction of blood flow in some capillaries reverses.
- Arteries become less rigid.
- Veins lose collagen.
Question 10
The great saphenous vein is the longest vein in the body.
- True
- False
Question 11
The blood pressure in the large systemic arteries is greatest during
- atrial diastole.
- ventricular systole.
- atrial systole.
- ventricular diastole.
Question 12
The distribution of blood in capillary pathways is largely controlled by the action of precapillary sphincters.
- True
- False
Question 13
Bruce has colorectal cancer that has spread to his lymphatic system. He is given a drug that is an angiogenesis inhibitor. The drug works by
- cutting off the supply of ATP to cancer cells.
- halting cell division only in tumor cells.
- stimulating new blood vessels to serve tissue damaged by the cancer.
- starving tumors by cutting off their blood supplies.
Question 14
The mechanism ensures that the volume of blood discharged from the heart is equal to the volume entering its chambers is described by ______ law of the heart.
- Frank-Starling’s
- Dalton’s
- Boyle’s
- Newton’s
Question 15
Osmotic pressure forces molecules in the blood out through capillary walls.
- True
- False
Question 16
Angiotensin II increases blood pressure by
- increasing peripheral resistance.
- releasing renin.
- inhibiting the release of aldosterone.
- promoting the excretion of sodium.
Question 17
Which type of blood vessel holds the greatest volume of blood?
- Capillary
- Artery
- Vein
- Arteriole
Question 18
A sphygmomanometer measures
- blood pressure.
- brain function.
- clotting time.
- hematocrit.
Question 19
The visceral pericardium lines the pericardial cavity, whereas the parietal pericardium covers the surface of the heart.
- True
- False
Question 20
The aorta is the largest artery in the pulmonary circuit.
- True
- False
Question 21
Circulation is vital because it
- delivers wastes to tissues.
- delivers carbon dioxide to tissues and removes excess oxygen.
- supplies oxygen and nutrients to and removes wastes from tissues.
- inflates the lungs.
Question 22
Venules continue from capillaries to form veins, which return blood to the atria.
- True
- False
Question 23
Central venous pressure is the pressure in the inferior vena cava at the central point of the abdomen.
- True
- False
Question 24
The pain of angina pectoris comes from a blockage in an artery that supplies the
- heart.
- sternum.
- left arm and shoulder.
- neck and jaw.
Question 25
In an ECG pattern, the T wave is caused by
- repolarization of ventricular muscle fibers.
- depolarization of ventricular muscle fibers.
- repolarization of atrial muscle fibers.
- depolarization of atrial muscle fibers.
ANSWERS
Question 1
Which of the following supplies blood to parts of the intestinal tract?
- Phrenic arteries
- Superior mesenteric artery
- Middle sacral artery
- Lumbar artery
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