poikilothermic animal

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• poikilotherm — A poikilothermic animal. SYN: allotherm, cold blooded animal. * * * poi·ki·lo·therm pȯi ki lə .thərm, (.)pȯi kil ə n an organism (as a frog) with a variable body temperature that is usu. slightly higher than the temperature of its environment:… …   Medical dictionary

• Warm-blooded — In biology, a warm blooded animal species is one whose members maintain thermal homeostasis; that is, they keep their body temperature at a roughly constant level, regardless of the ambient temperature. This involves the ability to cool down or… …   Wikipedia

• thermoreception — Sensory capacity (see sense) to detect the temperature of the environment and the body. It helps keep body temperature stable by regulating autonomic responses to temperature changes (see homeostasis). Temperature sensations are generated by… …   Universalium

• dinosaur — /duy neuh sawr /, n. 1. any chiefly terrestrial, herbivorous or carnivorous reptile of the extinct orders Saurischia and Ornithischia, from the Mesozoic Era, certain species of which are the largest known land animals. 2. something that is… …   Universalium

• Thermoregulation — is the ability of an organism to keep its body temperature within certain boundaries, even when temperature surrounding is very different. This process is one aspect of homeostasis: a dynamic state of stability between an animal s internal… …   Wikipedia

• aging — ag·ing (āʹjĭng) n. 1. The process of growing old or maturing. 2. An artificial process for imparting the characteristics and properties of age. * * * Gradual change in an organism that leads to increased risk of weakness, disease, and death. It… …   Universalium

• poikilotherm — 1. adjective cold blooded Syn: poikilothermic Ant: homoiotherm, homeotherm, homoeothermic 2. noun A cold blooded animal …   Wiktionary

• Heterothermy — (from Greek: heteros = other thermē = heat. ) is a physiological term for animals that exhibit characteristics of both poikilothermy and homeothermy. Contents 1 Temporal heterothermy 2 Regional heterothermy 3 References …   Wikipedia

• Great white shark — Taxobox name = Great white shark fossil range = Pliocene to recent status = VU trend = unknown status system = iucn2.3 image width = 250px regnum = Animalia phylum = Chordata classis = Chondrichthyes subclassis = Elasmobranchii ordo = Lamniformes …   Wikipedia

• Melatonin — Not to be confused with Melanin or Melanotan. Melatonin Systematic (IUPAC) name …   Wikipedia

• Brachiosaurus — Taxobox name = Brachiosaurus fossil range = Late Jurassic Early Cretaceous? image width = 250px image caption = Skeleton of Brachiosaurus brancai in Berlin regnum = Animalia phylum = Chordata classis = Sauropsida superordo = Dinosauria ordo =… …   Wikipedia