Integumentary System

Question 1

What are the 4 components of the integumentary system

Answer 1

-skin
-hair
-nails
-exocrine glands

Question 2

What are 4 functions of relevant components of the integumentary system

Answer 2

-vitamin d synthesis
-protection
-cutaneous sensation
-excretion

Question 3

Describe the epidermis layer of skin

Answer 3

No blood vessels or nerves
Protective barrier
Full replacement takes around a month
Carry’s bacteria and fungi

Question 4

Describe what the dermis layer of skin contains

Answer 4

Arterioles and capillaries
Lymph vessels
Sensory nerve endings
Sweat glands and their ducts
Hairs

Question 5

Describe the eccrine sweat gland

Answer 5

Majority all over body, clear watery fluid, pores on the surface lead to bodies in the subcutaneous layer

Question 6

Describe the apocrine sweat glands

Answer 6

Armpits and groin area via hair follicles, more viscous fluid and odour, active from puberty, specialised type to create ear wax

Question 7

How does the skin provide protection

Answer 7

Physical barrier against water loss and infection. Contains melanocytes that produce melanin which protects against harmful uv rays

Question 8

How does the skin aid the formation of vitamin d

Answer 8

Lipid based substance is converted into vitamin d by sunlight which is used to make calcium and phosphate for bone maintenance

Question 9

4 impacts of aging on the skin

Answer 9

Dermis and epidermis thins and elasticity reduce
Thermoregulation becomes less efficient
Dry skin
Weaker bones