Integumentary System Flashcards
1
Q
What is the largest organ in the integumentary system?
A
skin
2
Q
What are the accessory organs in the integumentary system?
A
- hair follicles
- finger and toe nails
- skin glands
3
Q
What are the functions of the integumentary system?
A
- first line of defense against bacteria and viruses
- protects from UV radiation and dehydration
4
Q
How do integumentary system control body temperature?
A
- too hot: dermal blood vessels dilate & more blood is sent to the surface
- too cold: dermal blood vessels constrict & prevents heat from escaping
5
Q
What are the layers of the skin from outside in?
A
- epidermis
- dermis
- subcutaneous (hypodermis)
6
Q
What are the characteristics of the epidermis?
A
- epithelial tissue
- no blood vessels
- has keratin
7
Q
What gives skin its color?
A
melanocyte makes melanin
8
Q
What are some examples and their causes of skin color changes?
A
- rubor/erythema (red): flushing of the skin due to dilated blood vessels
- pallor/pale: blood vessel constriction
- cyanosis: bluish tint to the skin when it isn’t getting enough blood
9
Q
What are characteristics of the dermis?
A
- has blood vessels, arteries, veins, capillaries, and nerves
- has sweat glands and hair follicles
10
Q
What layer of skin for blood get drawn from?
A
dermis (has capillaries)
11
Q
What are the characteristics of the subcutaneous layer?
A
- connective tissue
- has adipose tissue and larger blood vessels
12
Q
What are sudoriferous glands?
A
sweat glands
13
Q
What do eccrine glands do? Where are they?
A
- distributed throughout the body
- produce fluid to regulate body temperature
14
Q
What do apocrine glands do? Where are they?
A
- present in axilla and pubic area
- responsible for odor as bacteria break down organic substances
15
Q
What do sebaceous glands do?
A
- secretes oily substance (sebum)
- adds protective layer and prevents fluid loss
