Blood Vessels 2 Flashcards
1
Q
Arterial pressure is equal to A. venous pressure. B. capillary hydrostatic pressure. C. blood pressure. D. peripheral pressure. E. none of the above
A
C. blood pressure.
2
Q
During increased exercise A. vasoconstriction occurs at the active skeletal muscles. B. venous return increases. C. both cardiac output and stroke volume decrease. D. all of the above E. A and C only
A
B. venous return increases.
3
Q
At the knee, the small saphenous, tibial, and peroneal veins unite to form the \_\_\_\_\_ vein. A. femoral B. popliteal C. external iliac D. internal iliac E. inferior vena cava
A
B. popliteal
4
Q
The only blood vessels whose walls permit exchange between the blood and the surrounding interstitial fluids are the A. arteries. B. arterioles. C. veins. D. venules. E. capillaries.
A
E. capillaries.
5
Q
Venous valves are responsible for A. preventing backflow. B. pushing blood away from the heart. C. pushing blood toward the heart. D. both A and B E. both A and C
A
A. preventing backflow.
6
Q
Venoconstriction \_\_\_\_\_ the amount of blood within the venous system, which \_\_\_\_\_ the volume in the arterial system. A. doubles; decreases B. reduces; increases C. decreases; doubles D. increases; reduces E. none of the above
A
B. reduces; increases
7
Q
In response to hemorrhage, there is A. decreased vasomotor tone and peripheral vasodilation. B. increased parasympathetic stimulation of the heart. C. mobilization of the venous reserve. D. all of the above E. both A and C
A
C. mobilization of the venous reserve.
8
Q
Materials can move across capillary walls by A. diffusion and osmosis. B. active transport and bulk transport. C. secretion and adsorption. D. all of the above E. A and B only
A
E. A and B only
9
Q
Under normal cardiovascular circumstances, blood flow is \_\_\_\_\_ cardiac output. A. higher than B. less than C. equal to D. greater than E. lower than
A
C. equal to
10
Q
Compared with other vessels of the human vascular system, \_\_\_\_\_ pressure is usually low. A. venous B. capillary hydrostatic C. blood D. peripheral E. none of the above
A
A. venous
11
Q
When the popliteal vein reaches the femur, it becomes the \_\_\_\_\_ vein, before penetrating the abdominal wall. A. femoral B. deep femoral C. internal iliac D. external iliac E. lumbar
A
A. femoral
12
Q
Symptoms of shock include all of the following, except A. hypotension. B. rapid, weak pulse. C. decreased urine formation. D. acidosis. E. profuse sweating.
A
E. profuse sweating.
13
Q
Blood flow through a capillary is regulated by the A. vasa vasorum. B. capillary plexus. C. precapillary sphincter. D. arterial anastomosis. E. central channel.
A
C. precapillary sphincter.
14
Q
Which of the following affects blood flow through the body? A. blood viscosity B. vessel diameter C. turbulence D. resistance E. all of the above
A
E. all of the above
15
Q
The layer of the arteriole wall that provides the properties of contractility and elasticity is the A. tunica adventitia. B. tunica media. C. tunica intima. D. tunica externa. E. tunica mater.
A
B. tunica media.
16
Q
Branches off the aortic arch include the A. right and left subclavian arteries. B. left subclavian artery. C. left common carotid and right axillary arteries. D. brachio and right axillary arteries. E. both A and C
A
B. left subclavian artery.
17
Q
The \_\_\_\_\_ vein is formed by the fusion of the greater saphenous vein, femoral vein, and deep femoral vein. A. internal iliac B. external iliac C. common iliac D. inferior vena cava E. azygous
A
B. external iliac
18
Q
Blood moves forward through veins by all of the
following, except
A. because the pressure in the veins is lower than in the
arteries.
B. because of contraction–relaxation pumping of the
smooth muscle in the wall of the vein.
C. with the aid of the thoracoabdominal pump.
D. because valves in the veins prevent the backflow of
blood.
E. with the aid of contractions of skeletal muscles.
A
B. because of contraction–relaxation pumping of the
smooth muscle in the wall of the vein.
19
Q
Elevated levels of the hormones ANP and BNP will produce increased A. fluid loss through the kidneys. B. blood volume. C. sodium ion levels in blood. D. venous return. E. B and C
A
A. fluid loss through the kidneys.
20
Q
The secretion of ADH and aldosterone is typical of the body’s long-term compensation following A. a heart attack. B. hypertension. C. a serious hemorrhage. D. heavy exercise. E. a heavy meal.
A
C. a serious hemorrhage.
