End of chapter quiz: chapter 8 Flashcards
___________ carry blood away from the heart and ___________carry blood toward the heart.
a. Veins . . . arteries
b. Arteries . . . arterioles
c. Veins . . . capillaries
d. Arteries . . . veins
e. Arteries . . . capillaries
d.
Which blood vessel is best suited for exchange of gases and
nutrients with the surrounding tissue?
a. artery
b. vein
c. capillary
d. arteriole
c.
Which of the choices represents the order of vessels through
which blood passes after leaving the heart?
a. artery—arteriole—capillary—venule—vein
b. artery—capillary—arteriole—venule—vein
c. vein—venule—capillary—arteriole—artery
d. artery—vein—capillary—arteriole—venule
a.
All of the following mechanisms assist in returning venous
blood to the heart except:
a. an increase in heart rate
b. pressure changes in the abdominal and thoracic cavities due
to breathing
c. contraction of skeletal muscles in the legs
d. one-way valves located inside veins
a.
Arteries differ from veins in their thicker ________ and
________.
a. squamous epithelium . . . outer layer
b. endothelium . . . connections to precapillary sphincters
c. smooth muscle . . . one-way valves
d. outer connective tissue . . . smooth muscle
d.
Which vein(s) carry oxygenated blood?
a. superior vena cava and inferior vena cava
b. right and left pulmonary veins
c. aorta
d. both (a) and (b)
b.
________ of the squamous epithelial cells allow(s)
blood to exchange fluids and nutrients with the interstitial
fluid.
a. Precapillary sphincters
b. Pores and slits
c. The membrane
d. Gap junctions
b.
A pacemaker is used to correct:
a. coronary artery disease
b. cardiac arrhythmias
c. heart murmurs
d. hypertension
b.
As the blood travels through the circulatory system, the greatest
drop in pressure occurs in:
a. arteries
b. arterioles
c. capillaries
d. venules
b.
- All of the following are part of the cardiac conduction system
except the:
a. chordae tendineae
b. Purkinje fibers
c. sinoatrial node
d. atrioventricular bundle
a.
Which of the following is/are involved in regulating blood
pressure?
a. heart
b. baroreceptors
c. cardiovascular center in medulla oblongata
d. all of the above
d.
Which of the following would be an appropriate homeostatic
response to a drop in blood pressure below what is normal?
a. heart rate decreases
b. vasoconstriction of arterioles
c. force of cardiac contraction decreases
d. both (a) and (b)
b.
Why do heart attacks cause permanent tissue damage?
a. The sinoatrial nodes cannot restore the cardiac cycle.
b. Purkinje fibers do not transmit nerve impulses properly.
c. Myocardium cells cannot relax.
d. Cardiac cells die due to lack of blood irrigation
d.
Cholesterol is transported from the blood vessels to the liver by
________.
a. the lymph
b. HDL
c. LDL
d. red blood cells
b.
A heart attack occurs as a result of:
a. prolonged hypotension
b. narrowing or blockage of the coronary arteries
c. improper closure of semilunar valves
d. disruption of the cardiac conduction system
b.
