The question provides a big clue when you narrow answers down to the human organism.
In humans, the integumentary system comprises the skin, hair, nails, and exocrine glands, acting to protect the body from various kinds of damage. The integumentary system is essential for maintaining thermoregulation while providing a water or abrasion barrier from outside. Thermoregulation is the ability of an organism to keep its body temperature within certain boundaries, even when the surrounding temperature is very different.
Exocrine glands produce and secrete substances onto an epithelial surface by way of a duct. Examples of exocrine glands include sweat, salivary, mammary, ceruminous, lacrimal, sebaceous, and mucous.
- Integumentary System. innerbody.com/anatomy/integumentary Retrieved 22 Mar 2018
- Thermoregulation. en. wikipedia.com/wiki/Thermoregulation Retrieved 22 Mar 2018
- Exocrine gland. en. wikipedia.com/wiki/Exocrine_gland Retrieved 22 Mar 2018
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UPDATED: SEP 2, 2021