Receptors, Biology

Assignment Help:

Receptors are sense organs that receive stimuli.

On the basis of their location in body receptors are of following types -

1.       Extero receptor - Located at or near the body surface.

2.       Proprio receptor - Detect changes in position of limbs, muscle length and are located in muscles, tendons and joints. On earthquake first of all affected.

3.       Viscero receptor - Entero receptors detect pain in viscera, degree of stretching of blood vessel's  wall and movment in digestive tract.

On the basis of type of stimuli they receive, receptors are of following types -

1.       MECHANICAL RECEPTORS - Respond to mechanical changes.

(i) Thigmo receptors or Tango receptors - For touch. Missner's corpuscles, Markel's disc & tectile corpuscles.

(ii) Algesi receptors - For pain. Free nerve endings are more.

(iii) Pacinian corpuscles or Baro receptor - For pressure, deeply placed in dermis.

(iv) Stato receptor - Respond to gravity.

(v) Phonoreceptor - Respond to sound waves.

(vi) Rheo receptor - Respond to water current e.g. in fishes.

2.       THERMO RECEPTOR - End bulb of krausie or frigido receptor for cold. End bulb of Ruffini or callorie receptor for heat.

3.       CHEMO RECEPTOR - Gustatory receptors are for taste. Olfactory receptors are for smell.

4.       GALVANO RECEPTOR - Electro receptor. Respond to electric current in surrounding water e.g. in some fishes.

5.       PHOTO RECEPTOR - Respond to light e.g. Eyes.


Related Discussions:- Receptors

Illustrate mitral stenosis and pregnancy, Q. Illustrate Mitral Stenosis and...

Q. Illustrate Mitral Stenosis and Pregnancy ? Since mitral stenosis is often seen in young women, it is not uncommon to see young women with pregnancy complicated by mitral ste

Explain the interaction of vitamin a with iron, Explain the interaction of ...

Explain the interaction of vitamin A with Iron? Iron: Iron status of an individual correlates with vitamin A. The deficiency of  vitamin A has been found to be associated with

Chromolipid, CHROMOLIPID Formed by lipid & pigment, eg. carotene, xanth...

CHROMOLIPID Formed by lipid & pigment, eg. carotene, xanthophylls. Lycopene present in tomato & red chilli. Carrot is rich in b-carotene, converted into vitamin A.

What are the two divisions of the autonomic nervous system, What are the tw...

What are the two divisions of the autonomic nervous system? The autonomic nervous system is separated into the sympathetic nervous system and the parasympathetic nervous system

Coordination of digestion, Coordination of Digestion You have learnt ...

Coordination of Digestion You have learnt that digestion is a process in which large food molecules arc broken down step by step into their constituents. In primitive metazoa

Why is it dangerous to talk while eating, Q. Why is it dangerous to talk wh...

Q. Why is it dangerous to talk while eating? If a person talks when eating, food may be inhaled into the lungs. Generally after food is swallowed, it passes into pharynx and th

Explain the interaction of vitamin a with vitamin e, Explain the Interactio...

Explain the Interaction of Vitamin A with Vitamin E? Of the various nutrients, the interaction of vitamin E, proteins, zinc and iron with vitamin A is of significance. Know? Le

Smack, SMAC K - It is a crud by product of heroin synthesis, commo...

SMAC K - It is a crud by product of heroin synthesis, commonly called brown sugar (Poor man's heroin). The addicts heat the smack powder & inhale its vapour. It is

Tolerance model - models of succession, Tolerance Model - Models of Success...

Tolerance Model - Models of Succession In this model, the presence of early successional species is not essential, that is, any species can start succession. Some species are

Explain anaplerotic reactions, Anaplerotic Reactions Anaplerotic  reac...

Anaplerotic Reactions Anaplerotic  reactions are  reactions  that  replenish the  intermediates of  citric acid cycle. The  special  enzymatic mechanisms  by  which  the  pool

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