Vocab and General
What are the major organs and structures of the Integumentary System.
Skin
Hair
Nails
Sweat and Oil glands
What are the 4 of the 7 functions of the Integumentary System?
Protection
Sensory Perception
Body Temp Regulation
Storage
Absorption
Excretion
Production
What are the 3 layers of the skin?
Epidermis, Dermis, Hypodermis
What are the two types of hair
vellus and terminal
What is the function of nails?
to protect the digits
What happens to the blood vessel when it dilates.
The blood vessel gets larger.
Name 2 of the four ways the integumentary system protects the body.
Is a barrier from the sun’s UV rays.
Stops pathogens from getting into the body.
Holds moisture in.
Prevents outside fluid from getting into the body.
Give me 4 functions of the epidermis.
- Keeps out bacteria
- Keeps fluid and blood in
- Keeps extra fluid out
- Produces melanin and Vitamin D
What is the part of the hair that is implanted under the skin?
Hair root/follicle
white, semilunar area of nail near the root
lunula
What happens to the blood vessel when it constricts.
It gets smaller.
What is sensory perception?
The nerves help the body respond to pain, pressure, temperature and touch sensations.
What is the middle layer of skin called?
The Dermis
What blood vessels give hair nutrients.
Papilla
The visible part of the nail
nail body
What are the 2 functions of dilation?
It cools down the body and lowers the BP
How does the integumentary system regulate body temperature?
The blood vessels in the skin help the body retain or lose heat.
Sweat glands produce a salty water substance and cool the skin’s temperature down by perspiration.
What is the Dermis made of?
Elastic connective tissue.
What part of the hair is outside of the skin?
Hair shaft.
The part of the nail covered by the skin.
nail root
What are the 2 functions of constriction?
It warms up the body and raises the BP.
What does the integumentary system store?
Fat, glucose, water, vitamins and salts.
What is another name for hypodermis layer?
Subcutaneous Layer
What gives hair its color?
Melanin
The corneum that extends onto the nail body, which is sometimes pushed back when nails are done
cuticle
Where is melanin and vitamin D produced?
The epidermis
What vitamin does the integumentary system produce?
Vitamin D
What is the hypodermis made up of?
Connective tissue and adipose tissue.
What are nails and hair made of?
keratin
the portion of the nail NOT attached to skin, which will typically be the portion that will be cut
free edge