Thermo regulation

Question 1

These animals are prone to changes in temperature and has greater adaptability

Answer 1

Terrestrial animals

Question 2

Aquatic animals have low rate of metabolism True or False.

Answer 2

True

Question 3

Terrestrial animals have high specific heat and Aquatic animals have low specific heat. True or False

Answer 3

False

Question 4

Whats the heat tolerance of desert animals and turtle/camel?

Answer 4

50, 45

Question 5

How about birds tolerated temp?

Answer 5

35-42

Question 6

Why does shore invertebrates has low thermal tolerance?

Answer 6

no physiological mechanisms to regulate body temperature

Question 7

This explains how animals can adjust internal temperature

Answer 7

core temperature

Question 8

This explains how animals can aquire heat from environment

Answer 8

Heat acquisition

Question 9

Capable of maintaining a constant body temperature in spite of external temperature variations

Answer 9

Homeotherm

Question 10

Temperature varies with environment; confirm environment temperature

Answer 10

Poikilotherm

Question 11

Acquire heat from environment

Answer 11

Ectothermic

Question 12

Ectotherm is completely unable to produce body heat. True or False

Answer 12

False

Question 13

Animals that produce sufficient heat and maintain body temperature at constant level.

Answer 13

Endothermic

Question 14

Animals that depend to the environment with metabolic fluctuations; Facultative endotherms,

Answer 14

Heterothermic

Question 15

All endotherms are homeotherms and all ectotherms are poikilotherms. True or False

Answer 15

False. not all ectotherms are poikilothermic

Question 16

It is the gain or loss of heat through an object

Answer 16

Conduction

Question 17

It is the gain or loss of heat through water and air

Answer 17

Convection

Question 18

Animals can also gain or loss heat through waves entering/ exiting body t or f.

Answer 18

True. Through Radiation

Question 19

how do animals exercise “evaporation” in the body?

Answer 19

sweating

Question 20

Animals respond to cold by:

Answer 20

-behavioral; -Hibernation

Question 21

Effects of low temperature

Answer 21

-weak metablolic rate
-Slow freezing
-Fast cooling/chill coma state, supercooling

Question 22

This is the version of “hibernation” for insects

Answer 22

Supercooling/ fast cooling/ chill coma state

Question 23

the process where a liquid is cooled below its freezing point without turning into a solid.

Answer 23

SUPERCOOLING

Question 24

Poikilotherms avoid cold by?

Answer 24

supercooling

Question 25

Vertebrates has a little tolerance to freezing like arctic fishes and polar bears . True or False.

Answer 25

False. NO tolerance

Question 26

Poikilotherms have lower core temperature than the ambient temperature. true or false

Answer 26

True na true

Question 27

homeotherms have lower core temperature than the ambient temperature . t or f?

Answer 27

False.

Question 28

How do fishes cope to produce heat are they are poikilotherm?

Answer 28

They swim to produce heat in their muscle cells

Question 29

How do insects regulate temperature as they are poikilotherm?

Answer 29

-evaporation -absorption of heat through radiation -metabolism

Question 30

How do amphibians regulate heat as they are poikilotherm?

Answer 30

They keep their skin moist

Question 31

Poor insulation allows lower heat loss and prevents conservation of heat. T or F

Answer 31

False. Greater

Question 32

Flow of blood is controlled on which part of the nervous system

Answer 32

Sympathetic nervous system

Question 33

When we experience hypothermia, the blood flow through the skin is increased so that there is a greater loss of heat through the skin. True or False

Answer 33

False.

Question 34

When we experience hyperthermia, the flow of blood to the surface of the body is restricted minimizing the heat loss. True or false

Answer 34

False

Question 35

Whats the function of thyroxin and norepinephrine in thermoregulation in homeotherms?

Answer 35

They enhance oxygen consumption which means oxidation is happening (metabolic processes) and thus produce heat

Question 36

Nonshivering thermogenesis mechanism

Answer 36

-colorigenic hormones -brown fat

Question 37

Which part of the hypothalamus is activated when hypothermia is experienced?

Answer 37

Posterior part

Question 38

Which part of the hypothalamus is activated when hyperthermia is experienced?

Answer 38

Anterior part

Question 39

Capable of detecting temperature changes internally/ internal thermal receptors

Answer 39

blood vessels

Question 40

explain the thermo regulation of the hypothalamus when we experience hyperthermia and hypothermia

Answer 40

When we experience hyperthermia, the anterior part of the hypothalamus is activated to produce cooling. The blood vessels become dilated and therefore allowing blood flow this generates cooling effect and It also stimulates the sweat glands to produce sweat lowering the body's temperature. Meanwhile, when we experience hypothermia, the posterior part of the hypothalamus is activated stimulating warming mechanisms. This include vasoconstriction of the blood vessels to generate and conserve heat inside the body. This also triggers shivering of the muscles to produce heat and maintain the body's normal temperature at 37 degrees celsius.

Question 41

The area of thermal conductance in birds

Answer 41

Comb and legs

Question 42

explain what happens in hibernation and aestivation

Answer 42

Hibernation and aestivation lowers oxygen consumption and lowers body temperature. They restrict their feeding habits while storing a huge amount of fats.