Secretion
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Secretion
Secretion (pronunciation: /siˈkriːʃ(ə)n/) is a process by which substances are produced and discharged from a cell, gland, or organ for a particular function in the organism or for excretion.
Etymology
The term "secretion" is derived from the Latin word secretio which means "a separating".
Related Terms
- Excretion: The process by which waste products of metabolism are eliminated from an organism.
- Gland: An organ in the human or animal body which secretes particular chemical substances for use in the body or for discharge into the surroundings.
- Cell: The smallest structural and functional unit of an organism, typically microscopic and consisting of cytoplasm and a nucleus enclosed in a membrane.
- Organ: A part of an organism that is typically self-contained and has a specific vital function.
- Metabolism: The chemical processes that occur within a living organism in order to maintain life.
Types of Secretion
There are several types of secretion in human bodies and animal bodies, including:
- Serous Secretion: A type of secretion that is typically clear and watery.
- Mucous Secretion: A type of secretion that is typically thick and sticky.
- Sebaceous Secretion: A type of secretion that is typically oily.
Functions of Secretion
Secretion serves several important functions in the body, including:
- Digestion: Secretions in the digestive system play a crucial role in breaking down food into nutrients.
- Lubrication: Certain secretions serve to lubricate body parts to prevent friction and wear.
- Protection: Some secretions have protective functions, such as the secretion of mucus in the respiratory tract which traps dust and microorganisms.
External links
- Medical encyclopedia article on Secretion
- Wikipedia's article - Secretion
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