SELF EVALUATION - CHAPTER 13
BODY TEMPERATURE
1. The average rectal temperature in a healthy cow should be about:
a. 98.6 °F.
b. 101.5 °F.
c. 104.0 °F.
d. 106.5 °F.
2. Variations in temperature related to the time of day are known as:
a.
diurnal temperatures.b. core temperatures.
c. Poikilotherms.
d. ambient temperatures.
3. Nocturnal animals have body temperatures that are lower in the morning than in the afternoon.
a. True
b. False
PHYSIOLOGIC RESPONSES TO HEAT
4. What part of the brain has a temperature regulating center?
a. Medulla
b. Thalamus
c. Hypothalamus
d. Cerebral cortex
5. Which sweat gland type predominates among the domestic animals?
a. Eccrine
b. Apocrine
6. Which one of the following animals has the greatest heat loss from,sweating?
a. Sheep
b. Cats
c. Dogs
d. Horses
e. Pigs
7. Increased blood flow to the skin would increase heat loss.
a. True
b. False
8. Which domestic animal(s) is(are) best able to withstand extremes of heat?
a. Horse
b. Dog
c. Pig
d. Cattle and sheep
PHYSIOLOGIC RESPONSES TO COLD
9. The countercurrent flow of blood to the limbs of animals assists in warming the limbs.
a. True
b. False
0. Which domestic animal(s) is(are) best able to withstand cold?
a. Horse
b. Dog
c∙ Pig
d. Cattle and sheep
11. Piloerection is a response to:
a. heat.
b. cold.
c. watching television.
HIBERNATION
.2. A true hibernant:
a. is not represented by the bear.
b. abandons homeothermy in cold weather but will awaken if body temperature approaches freezing or some other higher set point.
c. abandons homeothermy in the cold and may freeze if body temperature becomes lower than freezing.
d. maintains a constant body temperature even while it sleeps through cold weather.
.3. White fat is more productive of heat production than brown fat.
a. True
b. False
HYPOTHERMIA AND HYPERTHERMIA
.4. Which one of the following is characterized by greater heat production than the capacity for heat dissipation?
a. Fever
b. Heat stroke
15. Fever has no beneficial effects.
a. True
b. False