Hair Flashcards
1
Q
What are the three layers of the hair shaft?
A
Medulla, Cortex, Cuticle.
2
Q
What phase is the active hair growth phase?
A
Anagen phase.
3
Q
What protein is hair primarily made of?
A
Keratin.
4
Q
What structure surrounds the hair papilla?
A
Hair bulb.
5
Q
What muscle causes goosebumps?
A
Arrector pili muscle.
6
Q
What determines hair color?
A
Melanin produced by melanocytes.
7
Q
What is the outermost layer of the hair shaft?
A
Cuticle.
8
Q
How fast does hair grow per day?
A
0.3 mm per day.
9
Q
How many hairs are lost on average per day?
A
50 hairs.
