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homeostasis

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control mechanism

control mechanism  

Any mechanism that regulates a biological process, such as a metabolic pathway or enzyme-controlled reaction, or that helps to maintain the internal environment (see homeostasis). See also feedback.
drinking

drinking  

Taking in water by mouth to quench thirst. Many aquatic animals take water in through the mouth, but this may play no role in homeostasis. True drinking applies to terrestrial animals that take in ...
feeding

feeding  

All behaviour that involves the obtaining, manipulation, and ingestion of food. Compare foraging.
internal environment

internal environment  

The conditions that prevail within the body of an organism, particularly with respect to the composition of the tissue fluid. The concept of an internal environment was first proposed by the French ...
motivation

motivation  

The cause for a spontaneous change in the behaviour of an animal that occurs independently of any outside stimulus, or of a change in the threshold of responsiveness of an animal to a stimulus, and ...
negative feedback

negative feedback  

A mechanism of regulation in which the products of a process or reaction act to inhibit their own formation. Negative feedback tends to stabilize systems whereas positive feedback amplifies.
osmoregulation

osmoregulation  

The control of the water content and the concentration of salts in the body of an animal or protist (see osmoregulator). In freshwater species osmoregulation must counteract the tendency for water to ...
regulator

regulator  

Any organism that can maintain a constant internal environment largely independently of the external environment. This is generally achieved by homeostatic mechanisms (see homeostasis). Regulators ...
thermoregulation

thermoregulation  

Regulation of body temperature by any means, whether physiological or behavioural. Some animals, particularly mammals and birds, can maintain a fairly constant internal body temperature (see ...
thirst

thirst  

The physiological and psychological state or condition caused by dehydration or lack of drink, characterized by an urge to drink and a feeling of dryness in the mouth and throat. See also angiotensin ...
vascular system

vascular system  

1 A specialized network of vessels for the circulation of fluids throughout the body tissues of an animal. All animals, apart from simple invertebrate groups, possess a blood vascular system, which ...

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