7.1 Anatomy of the Integumentary System Part 5 Flashcards
1
Q
What is the function of the arrector pili muscle?
A
smooth muscle that will contract when the body is cold or experiences an emotional response
2
Q
What cells are nails composed of?
A
dead epidermal cells that are converted to keratin
3
Q
Where are new cells the are converted to keratin located?
A
at the nail root and pushed to the external surface of the nail body
4
Q
What is the nail body?
A
the visible portion of the nail covering the epidermis
5
Q
Is the nail root visible?
A
no
6
Q
What is the cuticle?
A
stratum corneum of the epidermis that extends from the nail root and covers the visible portion of the nail
7
Q
What is the lunula?
A
visible portion of the nail bed near the nail root
8
Q
What is the usual shape of the lunula?
A
crescent shape
