Question Detail

ZOO 101 ZOO 101 Past Questions Objective Question

Question

Keratinocytes are the main cells of the epidermis. They are formed by cell division at the BASE of the epidermis and then:
Options
A Remain in place and become melanocytes
B Move towards the skin surface, gradually dying and becoming flattened
Correct Answer
C Move inward to the dermis
D Accumulate in the hypodermis
Correct Answer

Option B is the correct answer.

Detailed Explanation

Keratinocytes formed by cell division at the base of the epidermis continually move towards the surface. As they move, they gradually die and become flattened, forming the protective outer layer.

Hint

These cells undergo differentiation and eventually become the tough outer barrier.

Question Info