Properties Of The Hair And Skin Flashcards
The skin is the largest ______ in the body?
-Largest organ in the body
The skin protects us from the ______?
-Protects us from the environment
Healthy skin should be ___ ___ ___ ?
-Should be slightly moist, smooth, and flexible
What’s the difference between the skin of the scalp and skin on the rest of the body?
-They differ in the fact that the skin of the scalp has deeper, larger hair follicles to accommodate for the longer hair.
What are the different types of hair?
- Vellus or lanugo hair
- Terminal hair
What is vellus or lanugo hair?
- This hair is short, fine, and downy.
- Commonly found on infants.
- With adults it commonly found in places considered hairless such as eyelids, forehead, and bald scalp.
What is terminal hair?
- terminal hair is corset the vellum hair with the exception of gray.
- is generally found in places like the scalp, legs, and arms.
What are the two parts of a mature strand of human hair?
- The hair root
- the hair shaft
What is the hair root?
-the hair root is the part located below the surface of the scalp.
What is the hair shaft?
-the hair shaft is the portion of the hair that is above the surface of the skin.
What are the structures of the hair root?
- the follicle
- the bulb
- and the dermal papilla
What is a follicle?
- a follicle is pocket below the skin or scalp that contains the hair root
- surrounds the dermal papilla and is found all over the body except for the palms and bottom of the feet
What is a bulb?
- a bulb is a thickened club like shape that forms at the bottom of the hair root.
- the lower part of the bulb fits over and covers the dermal papilla
What is the dermal papilla?
- the dermal papilla is a small come shaped area at the base of the follicle
- contains the blood and nerve supply that provides nutrients for hair growth
What is the arrector pili
The arrector
