Melanocytes and Keratinocytes Work Together in Protecting the Skin from UV

question 90

Multiple Choice

Melanocytes and keratinocytes work together in protecting the skin from UV damage when keratinocytes________ .

• A) provide the melanocyte with nutrients necessary for melanin synthesis
• B) maintain the appropriate temperature so the product of the melanocyte will not denature
• C) accumulate the melanin granules on their superficial portion, forming a UV-blocking pigment layer
• D) maintain the appropriate pH in order for the melanocyte to synthesize melanin granules

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Definitions:

Adenohypophysis

The anterior lobe of the pituitary gland responsible for secreting several key hormones, including growth hormone and ACTH, which regulate various physiological processes.

Infundibulum

A funnel-shaped structure; it can refer to part of the fallopian tube close to the ovary, or to a structure in the brain that connects the hypothalamus to the pituitary gland.

Equilibrium

The condition in which all acting influences are balanced or canceled by equal opposing forces, resulting in a stable system.

Endocrine System

The collection of glands that produce hormones to regulate processes such as growth, metabolism, and sexual function.