Ch 17

Question 1

Thirst is stimulated by
A. increases in plasma osmolality and volume.
B. an increase in plasma osmolality and a decrease in plasma volume.
C. a decrease in plasma osmolality and an increase in plasma volume.
D. decreases in plasma osmolality and volume.
E. injection of vasopressin into the hypothalamus.

Answer 1

B. an increase in plasma osmolality and a decrease in plasma volume.

Question 2

When an individual is naked in a room in which the air temperature is 21°C (69.8°F) and the humidity 80%, the greatest amount of heat is lost from the body by
A. elevated metabolism.
B. respiration.
C. urination.
D. vaporization of sweat.
E. radiation and conduction.

Answer 2

E. radiation and conduction.

Question 3

Select A if the item is associated with (a) below, B if the item is associated with (b) below, C if the item is associated with both (a) and (b), and D if the item is associated with neither (a) nor (b)

Activation of Gs

(a) V1A vasopressin receptors
(b) V2 vasopressin receptors

Answer 3

B if the item is associated with (b) V2 vasopressin receptors

Question 4

Select A if the item is associated with (a) below, B if the item is associated with (b) below, C if the item is associated with both (a) and (b), and D if the item is associated with neither (a) nor (b)

Vasoconstriction

(a) V1A vasopressin receptors
(b) V2 vasopressin receptors

Answer 4

A if the item is associated with (a) V1A vasopressin receptors

Question 5

Select A if the item is associated with (a) below, B if the item is associated with (b) below, C if the item is associated with both (a) and (b), and D if the item is associated with neither (a) nor (b)

Increase in intracellular inositol triphosphate

(a) V1A vasopressin receptors
(b) V2 vasopressin receptors

Answer 5

A if the item is associated with (a) V1A vasopressin receptors

Question 6

Select A if the item is associated with (a) below, B if the item is associated with (b) below, C if the item is associated with both (a) and (b), and D if the item is associated with neither (a) nor (b)

Movement of aquaporin

(a) V1A vasopressin receptors
(b) V2 vasopressin receptors

Answer 6

B if the item is associated with (b) V2 vasopressin receptors

Question 7

Select A if the item is associated with (a) below, B if the item is associated with (b) below, C if the item is associated with both (a) and (b), and D if the item is associated with neither (a) nor (b)

Proteinuria

(a) V1A vasopressin receptors
(b) V2 vasopressin receptors

Answer 7

D associated with neither (a) nor (b)

Question 8

Select A if the item is associated with (a) below, B if the item is associated with (b) below, C if the item is associated with both (a) and (b), and D if the item is associated with neither (a) nor (b)

Milk ejection

(a) V1A vasopressin receptors
(b) V2 vasopressin receptors

Answer 8

D associated with neither (a) nor (b)