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tropism
The responses of plants to external stimuli is called Tropism.Here are some tropisms:* Chemotropism, movement or growth in response to chemicals * Geotropism (or gravitropism), movement or growth in response to gravity * Heliotropism, movement or growth in response to sunlight * Hydrotropism, movement or growth in response to water * Phototropism, movement or growth in response to lights or colors of light * Thermotropism, movement or growth in response to temperature.
Thigmotropism is a movement in which an organism moves or grows in response to touch or contact stimuli.
The human body has reflexes to regulate homeostatic elements such as heat, water. For example: wanting to be in shade if your hot.
A positive response is when a response happens to a stimuli, and this response causes more of the stimuli to happen. A negative response is when a response happens because of a stimuli, and the response stops the continuation of the stimuli.
Movement in response to light is called phototaxis, and in response to chemicals is chemotaxis. More specifically, movement towards a stimulus is positive and away from is negative. For example, positive chemotaxis is movement of a cell towards nutrients.
Autonomic Reflexes are micro movements in response to specific stimuli that are not regulated by conscious effort. Its most effective use is in the Autonomic Digital Reflexapproach in which twitches of the fingers are decoded as meaningful reactions of the body's inner state.
Akinesia means loss of movement. Rigor means rigidness preventing response to stimuli - also a loss of movement.
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reflexes
Reflexes are uncontrollable movements that happen almost instantly in response to a stimuli. A reflex arc, a neuronal circuit that controls reflexes, is where reflex activities takes place.