151. The figure illustrates the capillary network. What does “D” represent? 
A. precapillary sphincter
B. metarteriole
C. thoroughfare channel
D. arterial capillaries
E. venous capillaries

152. The figure illustrates the capillary network. What does “E” represent? 
A. precapillary sphincter
B. metarteriole
C. thoroughfare channel
D. arterial capillaries
E. venous capillaries

153. Which of the following would occur as a person goes into shock? 
A. Baroreceptors are stimulated.
B. Chemoreceptors are depressed.
C. Renin release is inhibited.
D. Parasympathetic stimulation is increased.
E. Sympathetic stimulation is decreased.

154. Urine output usually decreases when a person is in shock. This is the result of 
A. decreased ADH secretion.
B. increased renin secretion.
C. increased secretion of atrial natriuretic factor.
D. decreased vasoconstriction due to the stress relaxation response.
E. decreased aldosterone secretion

155. Compensatory shock is characterized by a narrowed pulse pressure. Which of the following blood pressure readings is an example of a narrowed pulse pressure? 
A. 99/40
B. 70/20
C. 92/64
D. 82/40
E. 100/50

Fill in the Blank Questions
 

Use the following key to choose the most correct answer.
A. Choose this if the first item is greater than the second item.
B. Choose this if the first item is less than the second item.
C. Choose this if the first item is equal or nearly equal to the second item.

156. (1) systolic pressure;
(2) diastolic pressure 
 

157. (1) velocity of blood flow in the arterioles;
(2) velocity of blood flow in the aorta 
 

158. (1) velocity of blood flow when cross-sectional area increases;
(2) velocity of blood flow when cross-sectional area decreases 
 

159. (1) blood pressure in the aorta;
(2) blood pressure in the superior vena cava 
 

160. (1) plasma volume when ADH levels increase;
(2) plasma volume when ADH levels decrease 
 

Match the term with the appropriate description.
A. a bulge (a weak spot) in the artery wall
B. degenerative changes in arteries
C. an overstretching of the veins of the lower extremities
D. inflammation of the veins
E. small vessels that supply nutrients to large arteries