Glands

Definition

Glands are specialized organs that secrete substances necessary for various bodily functions. In the skin, glands play a crucial role in maintaining homeostasis and protecting against infections.

5 Must Know Facts For Your Next Test

1. Sweat glands help regulate body temperature and can be either eccrine or apocrine.
2. Sebaceous glands produce sebum, which lubricates the skin and has antimicrobial properties.
3. Blocked sebaceous glands can lead to acne, a common skin infection.
4. Modified sweat glands, like ceruminous glands in the ear, produce earwax that protects the ear canal from microbial invasion.
5. Meibomian glands in the eyelids secrete oils that prevent the evaporation of tears, aiding eye lubrication.

Review Questions

• What are the two main types of sweat glands found in human skin?
• How do sebaceous glands contribute to skin health?
• Which gland is responsible for producing earwax?

Related terms

Sebum:

An oily substance produced by sebaceous glands that moisturizes and protects the skin.

Eccrine Glands: A type of sweat gland that helps regulate body temperature through perspiration.

Meibomian Glands:

Oil-secreting glands located in the eyelids; they help to keep eyes lubricated.