glands

Glands are specialized organs that produce and release substances essential for the body's functions. These substances include hormones, enzymes, saliva, sweat, and milk, which help regulate processes like growth, digestion, temperature, and reproduction. Glands can be internal (endocrine glands) like the thyroid or adrenal glands, which release hormones directly into the bloodstream, or external (exocrine glands) like sweat or salivary glands, which secrete substances through ducts to specific body surfaces or cavities. Overall, glands play a vital role in maintaining health and ensuring that the body's systems operate smoothly.