Integumetary System

Question 1

What is the integumentary system?

Answer 1

Organ system consisting of the skin, hair, nails and exocrine glands.

Question 2

Roles of the skin:

Answer 2

• Protection from infection (physical barrier)
• keeps our bodies at the correct temperature (37°C)
  Homeostasis = stimulus= detects temperature, pressure

Question 3

What is thermoregulation?

Answer 3

• Control of body temperature

Question 4

Where is the hypothalamus?

Answer 4

• In the brain

Question 5

What does the hypothalamus do?

Answer 5

• Brings out a number of changes in the body by monitoring the temperature of the blood.

Question 6

How does the hypothalamus monitor blood?

Answer 6

Senses your internal blood temperature becoming too low or high = sends signals to your muscles, organs, glands & nervous system.

Question 7

Where is the adipose tissue found?

Answer 7

Underneath the skin & between the organs

Question 8

What is the role of the adipose?

Answer 8

Insulation

Question 9

What is vasconstriction?

Answer 9

Arteriole’s get smaller to reduce blood going to skin = keeping core warm.

= blood vessels constrict to limit the flow of blood close to the surface of the skin = when the hypothalamus has detected the blood temp too low.

Question 10

What is vasodilation?

Answer 10

Arteriole’s dialate (enlarge) s0 more blood enters the skin, capillaries & heat is lost.

= dilation of blood vessels, so blood runs closer to the surface of the skin.

Question 11

Describe the role of sweating:

Answer 11

Response to the temperature of blood rising.
= this a response to reduce it.

Question 12

Roles of hairs:

Answer 12

Hair erector muscle: contracts = warms you up

Muscles respire = contract & release energy = heat
Process releases energy= respiration

Question 13

Roles of adipose layer:

Answer 13

Insulation & energy store

Question 14

Roles of blood supply in maintaining body temp:

Answer 14

Homeostasis support
Sweat gland activation
Vasoconstriction ( heat conservation )
Vasodilation ( heat loss )