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!
Chemoreceptors
These are receptors included in perception of chemical stimuli. You will see that there are three kinds of Chemoreceptors among metazoans:
i) Those concerned along with general chemical sense perceived by undifferentiated nerve endings or unspecified receptors. These are distributed all over the surface of the body and are common in between lower animals such as cnidarians, worms and molluscs. The most primitive type of chemoreceptor and results in escape reaction of the animal.
ii) Chemotactile sense perceived through contact Chemoreceptors involving contact with molecules in dilute solution; they are generally present in large numbers in special regions of the body. In mammals these are located on the tongue and we call the sensation taste or gustation. But in Octopus they are concentrated around the rim of the suckers, and in insects they are present on mouthparts and in flies, they are found in abundance as well on tarsal segment of foot. So one may say that the fly tastes with their fed.
iii) Olfaction involves distant chemical sense and is the most sensitive type of chemical sense. Olfactory receptors are capable of perceiving molecules of very low concentration in air and we usually call it smell. They are distributed in high density on the antennae of insects. The combined electrical recordings of the antennal nerve generated by the odors on the olfactory receptors of the antennae are termed electroantennogram. Specific insects can recognize their mates even at a distance of a couple of kilometers, from the odour (pheromone) molecules they emit.
Explain about the Cancer and Infertility - Obesity? Cancer: Risk of cancers of the colon, rectum and prostrate increases greatly in obese men while obese women are more likely
Cholesterol can be gained either from the diet or it can be synthesized de novo, mainly in the liver. Cholesterol is transported round the body in lipoprotein particles. The rate
What is a Cell? The body of every living being is made up a living matter or bio matter. In the organisms these matters occur only in the form of minute membrane bound unit lum
Explain Ventricular Fibrillation (VF) and Pulseless Ventricular Tachycardia (VT) The commonest rhythm seen in cardiac arrest is VF, which may be preceded by a short period of
Define methods used in combination with pasteurization? Typical other methods used in combination with pasteurization include: 1. Refrigeration as in the case of milk
Water Water is the most important constituent of all living tissue. It forms up to 95% of the fresh weight of some animals. We all know that water is lost through sweat, excre
BIOLOGY - A SCIENCE OF EXCEPTION - Some common examples to prove it are - 1. Embryos of dicot plants have 2 cotyledons but in cuscuta (Dodder plant or amer bel or Aka
Expression clone is a clone (plasmid in the bacteria, or might be a lambda phage in bacteria) which is designed to produce the protein from the DNA insert. Mammalian genes do not
Give an example of how a functional group can affect the elements of an organic compound. The hydroxyl group on alcohols is polar and this produces alcohols polar compounds.
Q. Define ST Elevation in aVR? Lead aVR often develops ST elevation as a reciprocal of ST depression in lead V2 to V6 or leads 2 and 3. It may occasionally show ST elevation in
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: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd