Principles of homeostasis with negative feedback, Biology

Assignment Help:

The principle of homeostasis is controlling the heating system with a simple thermostat in a house. These components are essentials thermometer, source of heat turning it on or off the thermometer is controlled by a switch, when the temperature drops below a certain level the heating is switched on and when the temperature rises above a certain level the heating is switched off. There are many systems in the body that contribute to homeostasis the obvious, are the kidneys which regulates water and salt and remove substances that might poison the enzymes. The liver which regulates the level of glucose in the blood etc also the lungs regulate oxygen and carbon dioxide, the skin regulates temperature and the brain has the overall control of the homeostatic processes in the body. It checks the composition of the blood flowing through it and if it is too warm, too cold, too concentrated or has too little glucose, nerve impulses or hormones are sent to the organs concerned, causing them to make necessary adjustment.

Negative feedback is a control mechanism in which a change from the norm triggers off a response this allows the norm to re set. If the internal factor in question rose above its norm value, the corrective action taken by the body would cause the opposite (negative) effect. Therefore if the factor fell below its norm the corrective action would again have the opposite negative effect, causing it to rise to normal value. This is the process in which departure from a set level is detected by receptors. These convey information to effectors which bring about a return to the original value see diagram below.

2059_homeostasis.png


Related Discussions:- Principles of homeostasis with negative feedback

Polarity - root and shoot morphogenesis, Polarity - Root and Shoot Morphoge...

Polarity - Root and Shoot Morphogenesis Polarity is defined as having a difference (morphological, physiological or both) between the two ends of an axis or cells. This is lar

Define the term hot water blanching, Define the term Hot water blanching? ...

Define the term Hot water blanching? A appropriate water-blanching process in traditional processing is as follows: The sliced material is placed on a square piece of cl

Determine dominant individual fromhomozygous or heterozygous, Why can cross...

Why can crossing of an individual that manifests dominant phenotype with another that manifests recessive phenotype (for the same trait) determine whether the dominant individual i

Explain the steps of converting food into energy, Explain the steps of conv...

Explain the steps of converting food into energy. There are four steps to convert food into energy: a) Ingestion, mastication and swallowing : Ingestion or taking in of food

Explain intraoral barrier techniques, Q. Explain Intraoral Barrier Techniqu...

Q. Explain Intraoral Barrier Techniques? Rubber dam A rubber dam is used whenever possible for improved vision and access and to reduce dental personnels' exposure to micr

How the study of fossils strengthen the theory of evolution, How does the s...

How does the study of fossils strengthen the theory of evolution? The study of fossils reveals ancient and extinct species having many same structures to others of the present

Define the insulin resistance - obesity, Define the Insulin resistance - Ob...

Define the Insulin resistance - Obesity? Insulin resistance is a condition in which your body cells cannot utilize insulin efficiently although sufficient amounts are secreted

Which equipments are required for stress laboratory, The stress lab must ha...

The stress lab must have the following equipment: 1) A mercury Blood Pressure apparatus. 2) A Bed so that the patients ECG can be recorded in the recovery period in supine po

Describe the organization of the vascular plant body, Describe the Organiza...

Describe the Organization of the Vascular Plant Body? A typical plant body consists of two distinct systems: a root system and a shoot system. The root system is usually below

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