Regulatory mechanisms, Biology

Assignment Help:

Regulatory Mechanisms

The immediate response to acute temperature chance is mediated through the central nervous system. The physiological thermostat has been located in the hypothalamus of the mammal and the spinal cord of the bird. These are the centres of reflex action and are activated by the temperature receptors of the skin or mucous membranes or directly through the changes in the temperature of the hypothlamus (or the blood circulating through it).

The physiological thermostat through the efferent nerve fibres stimulate the muscles for panting and shivering and through the autonomic system it regulates the cutaneous blood vessels, the sweat glands and so on. In some of the amniotes, the pineal and parapineal organs influence thermoregulatory behaviour and physiology. Cardiovascular and cutaneous responses are acute reactions to temperature change. If the exposure is more prolonged, the endocrine system enters the picture and the metabolism is altered particularly by way of the thyroid and adrenal glands.


Related Discussions:- Regulatory mechanisms

Explain about balanus, Explain Balanus The realised niche of Balanus ...

Explain Balanus The realised niche of Balanus is the same as its fundamental niche  Lower limits:   as for fundamental niche. Upper  limits: as for fundamental niche

Explain the vertical implant position, Vertical Implant Position: The i...

Vertical Implant Position: The implant can be submerged in the bone up till the level, where it is surface treated or further embedded till its shoulder, depending upon the sit

Determine the solubility of micronutrient cations, Determine the solubility...

Determine the solubility of micronutrient cations The solubility of micronutrient cations is at a maximum at low pH values. As the pH increases the ions of these elements first

Specie concept, what is nomenalistic specie concept

what is nomenalistic specie concept

Contraceptive pill - reproduction, Contraceptive Pill - Reproduction ...

Contraceptive Pill - Reproduction About sixty million women in the world are currently using oral steroid contraceptives. These contraceptives usually consist of a synthetic

What is the destination of the branchial clefts in humans, What is the dest...

What is the destination of the branchial clefts in humans? In humans the branchial clefts situated in the anterior region of the pharynx (also called as pharyngeal clefts) are

Deficiency diseases-thiamine deficiency (hypothiaminosis), Thiamine deficie...

Thiamine deficiency (hypothiaminosis) Thiamine deficiency is characterized by signs of nervous system. The primary  thiamine deficiency is not common in animals. However, seco

What type of compound is the metabolic waste of porifera, What type of comp...

What type of compound is the major metabolic waste of Porifera? Why is it important for the organism to get rid of this compound?

Determine the statement- the evolution of color vision, Based on your readi...

Based on your reading of the article entitled "The Evolution of Color Vision", which of the following is a false statement? A. Trichomatic vision is found in all male and femal

Experiment of making a rock collection, Making a rock collection A coll...

Making a rock collection A collection of the common rocks found in the community can be made by asking every pupil to bring in single piece of rock. Explain to the pupils that

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd