Gland
A group of cells that secrete a fluid substance
A gland is an organ or group of specialized cells in the body that synthesizes or secretes substances for use within the body or for elimination as waste. Glands are classified into two main types based on their mode of secretion: endocrine glands and exocrine glands.
Endocrine glands secrete hormones into the bloodstream to regulate various physiological processes in the body such as growth and development, metabolism, and reproduction. Examples of endocrine glands include the pituitary gland, thyroid gland, adrenal gland, and pancreas.
Exocrine glands secrete their products through a duct onto a surface such as the skin or into a body cavity such as the digestive tract. Examples of exocrine glands include sweat glands, mammary glands, and salivary glands.
The secretions from glands contain different types of substances such as enzymes, hormones, mucus, and sweat, which perform various functions in the body. The proper functioning of glands is essential for maintaining health and preventing diseases or disorders related to glandular dysfunction.
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