Stimulus (physiology)


Stimulus (physiology)

In physiology, a stimulus is a detectable change in the internal or external environment. When a stimulus is applied to a sensory receptor, it elicits or influences a reflex via stimulus transduction. A stimulus is often the first component of a homeostatic control system. When a sensory nerve and a motor nerve communicate with each other, it is called a nerve stimulus. Any of your five senses will accommodate to a particular stimulus.

ee also

*Stimulation

The plural for stimulus is stimuli


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  • physiology — /fiz ee ol euh jee/, n. 1. the branch of biology dealing with the functions and activities of living organisms and their parts, including all physical and chemical processes. 2. the organic processes or functions in an organism or in any of its… …   Universalium

  • stimulus — /ˈstɪmjələs / (say stimyuhluhs) noun (plural stimuli /ˈstɪmjəlaɪ/ (say stimyuhluy), /ˈstɪmjəli/ (say stimyuhlee) or stimuluses) 1. something that incites to action or exertion, or quickens action, feeling, thought, etc.; an incentive: *Australia… …   Australian English dictionary

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  • Gastrointestinal physiology — is a branch of human physiology addressing the physical function of the gastrointestinal (GI) system. The major processes occurring in the GI system are that of motility, secretion, regulation, digestion and circulation. The function and… …   Wikipedia

  • Transduction (physiology) — In physiology, transduction is the conversion of a stimulus from one form to another. Transduction in the nervous system typically refers to synaptic events wherein an electrical signal, known as an action potential, is converted into a chemical… …   Wikipedia

  • Neural top down control of physiology — concerns the direct regulation by the brain of physiological functions (in addition to smooth muscle and glandular ones). Cellular functions include the immune system’s production of T lymphocytes and antibodies, and nonimmune related homeostatic …   Wikipedia


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