Exocrine Glands of the Integumentary System

The video tutorial explains the differences between endocrine and exocrine glands, focusing on the latter. It details the three main types of exocrine glands: merocrine, apocrine, and sebaceous. Merocrine glands aid in thermoregulation by secreting sweat, which is mostly water with some salts and enzymes. Apocrine glands, active from puberty, release protein-rich secretions into hair follicles, often causing body odor. Sebaceous glands produce sebum, an oily substance that lubricates and protects the skin and hair, becoming more active during puberty due to testosterone.

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