Question

question 12
2 pts
hair:
alternates between periods of growth and rest.
consists of keratinized cells.
is formed from cells of the germinal matrix.
is all of the above.

Explanation:

Hair growth occurs in cycles with growth (anagen), transition (catagen), and rest (telogen) phases. Hair is made up of keratin - a protein in keratinized cells. The hair bulb contains the germinal matrix where new hair cells are produced.

Answer:

is all of the above.