Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Properties of Receptors
The receptors collect information concerning the change in the environment such as temperature, illumination etc. In lower animals, sensory perception is mediated by undifferentiated nerve endings. These are their sense organs. Though, the receptors or sense organs become more specialized and elaborate. Such type of elaborate sense organs are present even in Cnidaria, and they become much more complicated in higher animals. You have already seen that sensory receptors exchange one form of energy into another, electrical. So all receptors are transducers. Even one molecule of odour substance is frequently able of evoking a small electrical disturbance in a chemoreceptor. This local current is generally the result of amplification too, and is propagated along the axon of the sensory receptor. So the receptor is extremely sensitive to change in the environment. You have to also note that each sensory receptor responds to just only one kind of stimulus. For example, chemo-receptors will respond to only chemical stimuli, but not to mechanical or light stimuli. Another significant fact you have to bear in mind is that the frequency of nerve impulse increases with strength of the stimulus. In other words, information that is concerning intensity of the stimulus is transmitted by frequency code. Thus the code of information travels as impulse in axons of all receptors, be it mechanoreceptor, photoreceptor or chemoreceptor. But because each kind of receptor is sensitive to one type of stimulus only and because these axons carry impulses to specific regions of the central nervous system, brain correctly interprets the information reaching it. Depending on the type of stimulus, receptors may be divided into mechanoreceptors, chemo receptors and photoreceptors.
Explain Metabolic changes during infection With the rise in body temperature above normal (98.4 0 F or 37°C) due to infection several metabolic changes occur in the body
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
The book that I rented is missing some pages. How can i get a replacement?
State the term - Early therapeutic Intervention Since outcome may be ameliorated by well timed and appropriate treatment, the prevailing belief is that dysfunction should be id
Q. How does the embryo turn from gastrula into neurula? How is the neural tube formed? What is the embryonic origin of the nervous system in vertebrates? The neurula stage is c
Why acquired traits are not directly related to the process of evolution? As acquired traits are not genetically determined, they cannot be passed on to offspring. Therefore,
NUCLEUS First described and christened by Robert brown 1831, a nucleus is the largest and most important organelle of eukaryotic cells. It is membrane bound and generally locat
Sporogenous Tissue The primary sporogenous cells (PSCs) result after the periclinal division of the archesporial cells. The PSCs may undergo mitotic divisions and increase in
Define the Food System in space? Mercury (1961-1963) astronauts had to eat bite-sized cubes, freeze dried powders, and semi liquids stuffed in aluminium tubes. For most asbonau
Fixed-Dose Combinations A combination formulation of rifampin, isoniazid and pyrazinamide (Rifater) is approved by the FDA for the initial 2 months of daily anti-tuberculosis
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!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd