Question

What is the purpose of the sweat glands in our skin?

Answer 1

Primarily to help regulate body temperature. When your body heats up (exercise, hot environment, fever), sweat glands produce sweat that evaporates from the skin and cools you down.

Other roles and details:
- Thermoregulation: the main function — evaporation of sweat removes heat.
- Excretion and electrolyte balance: sweat contains water, salts (Na+, Cl−) and small amounts of urea, lactate and ammonia, so it helps remove some metabolic wastes and adjust salt balance.
- Types of glands:
- Eccrine glands: found all over the body, especially forehead, palms, soles; produce watery sweat for cooling; controlled by the sympathetic nervous system.
- Apocrine glands: located in armpits and groin; produce thicker secretions that bacteria can break down, producing body odor; become active at puberty and are involved in scent signaling.
- Other roles: emotional sweating (palms, soles) in response to stress, and contribution to skin surface antimicrobial defenses via peptides in sweat.