An Important Hormone Precursor That Is Formed in the Skin

question 18

Multiple Choice

An important hormone precursor that is formed in the skin when it is exposed to sunlight is

• A) cholesterol
• B) melatonin
• C) melanin
• D) cholecalciferol

---

Definitions:

Motor Cortex

A region of the cerebral cortex involved in the planning, control, and execution of voluntary movements.

Frontal Lobes

The part of the brain located behind the forehead that is responsible for complex cognitive functions, including behavior, learning, personality, and voluntary movement.

Angular Gyrus

A region of the brain in the parietal lobe that is involved in processing language, numbers, and spatial cognition.

Broca's Area

A region in the frontal lobe of the brain associated with speech production, language processing, and language comprehension.