What is homeothermy in biology?
What is homeothermy in biology?
Homeothermy, homothermy or homoiothermy is thermoregulation that maintains a stable internal body temperature regardless of external influence. This internal body temperature is often, though not necessarily, higher than the immediate environment (from Greek ὅμοιος homoios “similar” and θέρμη thermē “heat”).
What is a poikilotherm and a homeotherm?
A poikilotherm is an organism that does not maintain a fixed internal temperature but rather fluctuates based on their environment and physical behaviour. Homeotherms are not necessarily endothermic. Some homeotherms may maintain constant body temperatures through behavioral mechanisms alone, i.e., behavioral thermoregulation.
What is the meaning of hoitherm?
ho·me·o·therm (hō′mē-ə-thûrm′) also ho·moi·o·therm (hō-moi′ə-) n. An organism, such as a mammal or bird, having a body temperature that is constant and largely independent of the temperature of its surroundings.
How do homeotherms maintain constant body temperatures?
Some homeotherms may maintain constant body temperatures through behavioral mechanisms alone, i.e., behavioral thermoregulation. Many reptiles use this strategy. For example, desert lizards are remarkable in that they maintain near-constant activity temperatures that are often within a degree or two of their lethal critical temperatures.
What is the difference between endothermy and homeothermy?
Homeothermy: The ability to maintain a steady body T that is independent of environmental (ambient) T Endothermy and homeothermy are distinct concepts, but they are tightly linked in mammals. Homeothermic endotherms defend a temperature “set point” (metabolic thermoregulation). Costs and benefits of homeothermy
What is the difference between homeothermy and poikilothermy?
Homeothermy is one of the three types of thermoregulation in warm-blooded animal species. Homeothermy’s opposite is poikilothermy. A poikilotherm is an organism that does not maintain a fixed internal temperature but rather fluctuates based on their environment and physical behaviour. Homeotherms are not necessarily endothermic.
What are the characteristics of a homeothermic animal?
: having a relatively uniform body temperature maintained nearly independent of the environmental temperature : warm-blooded There are several mechanisms by which homeothermic animals increase their heat production, including shivering, sympathetic nervous system activation and stimulation of thyroid hormone secretion.— J. E. Silva et al.
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