Integumentary System

Question 1

What are the 3 layers of the skin called?

Answer 1

Epidermis, dermis, and subcutaneous layer

Question 2

What produces sebum?

Answer 2

The sebaceous gland

Question 3

List 3 functions of the skin

Answer 3

Protection, sensation, excretion, synthesis of vitamin D, blood reservoir, and regulate body temperature.

Question 4

Are all bacteria on our skin harmful?

Answer 4

No we have bacteria on our skin that are harmless called residents. However, transient bacteria may be harmful.

Question 5

Athletes foot and ringworm are examples of _____________ skin infections.

Answer 5

Fungal

Question 6

Which is the outer layer of the skin called?

Answer 6

Epidermis

Question 7

Which layer of the skin is mainly made up of connective tissue?

Answer 7

Dermis

Question 8

What are some functions of normal flora of the skin?

Answer 8

Lower pH level of skin to inhibit transients/pathogens, excretes antibacterial chemicals, competing for space/nutrients, stimulates immune response to fight pathogens.

Question 9

Outline the role of the skin in temperature regulation

Answer 9

A decrease can be achieved by: sweating/panting, reducing activity, finding a cool place/taking clothes off & dilation of dermal arteriole.
Increase: increasing muscle activity/shivering, finding a warm place/putting more clothes on & constriction of dermal arterioles.

Question 10

Describe the maintenance of homeostasis of body temperature.

Answer 10

The hypothalamus in the brain sets and maintains the body’s ‘normal’ temperature.