Chapter 6- Intugmentary System

Question 1

Functions of Integumentary system

Answer 1

1: protection=> primary barrier
-acid mantle (secretions on skin)
2: temperature regulation
-sweating and control blood flow
3: vitamin D production
-some vitamin D precursors are made in skin

4: sensation
-touch, temp and pain

5: Excretion of waste
- sweat-excess water and salts

Question 2

What does dermal papillae do?

Answer 2

Increase surface area of basement membrane to help it stick better

Question 3

What are the cells of the epidermis?
What does each cell do?

Answer 3

1- KERATINOCYTE- makes keratin
-95% of epidermis is keratin

2- MELANOCYTE- make the melanin(s)
-5-10% of epidermis

3- INTRA EPIDERMAL MACRO PHAGES
- less than 1% of epidermis
- moves around looking for things not supposed to be there

Question 4

1-Cutaneous is skin or not skin? And consists of which layers?

2- subcutaneous is skin or not skin? Consists of which layer?

Answer 4

1- cutaneous is skin and consists of epidermis and dermis

2- subcutaneous is NOT skin and consists of the hypo-dermis (not skin, not apart of integumentary system)

Question 5

What is a blister and what happens when you get a blister?

Answer 5

Epidermis (top layer) separates from the dermis (middle layer)
-happens from friction, chemical exposure, sunburns (can all make dermal papillae separate)