Integumentary System Study Guide

Question 0

What is the purpose of the subcutaneous layer? What can be found here?

Answer 0

It insulates and contains the major blood vessels.

Question 1

What are the two major layers of the skin?

Answer 1

1. Epidermis

2. Dermis

Question 2

The top layer of the epidermis is made up of what type of cells?

Answer 2

Tough, dead cells

Question 3

What are the two layers of the epidermis that you were given? Where are they found?

Answer 3

Stratum basale (close to dermis) and stratum corneum (outer layer)

Question 4

What are the three types of glands? Where can they be found? What do they do?

Answer 4

1. Eccrine glands; sweat due to physical conditions; forehead, neck, back
2. Apocrine glands; sweat due to emotional stressors; axillary and groin
3. Sebaceous glands; secrete sebum into hair follicles

Question 5

Three structures of the nail and their functions

Answer 5

1. Nail root, where the cells form
2. Lunula, the most active growing region
3. Nail bed, what the nail attaches to

Question 6

What is keratin?

Answer 6

Protein

Question 7

What happens when keratin cells die?

Answer 7

They accumulate in the outer epidermis.

Question 8

What is the purpose of melanin?

Answer 8

It protects the skin from UV Rays

Question 9

List 6 functions of the skin

Answer 9

1. Protective covering
2. Regulates body temperature
3. Slows water loss
4. Houses sensory receptors
5. Synthesizes various biochemicals
6. Excretes small amounts of waste

Question 10

What are the erector pili muscles?

Answer 10

A bundle of smooth muscle cells

Question 11

Hair and nails are made up of what type of cells?

Answer 11

Epithelial cells