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.
Central Nervous System Hypertension is one of the leading causes of cerebrovascular disease. It has been associated with accelerated age related cognitive decline. The most d
EXCRETIO N IN ROUNDWORM - In ascaris 4 coelomoducts present, attached to each other by canaliculli in front of controling cell i.e. Rennete cell. Excretion materials are gi
Define the Bioavailability of Vitamin K? Very little is known about the bioavailability of the K vitamins from different foods. It has been estimated that the efficiency of ab
why are they called as pisces
What are the differences b/w bone and cartiledge
Yesterday, when Eric returned home from jogging, he was breathing heavily, sweating profusely, and complained that his legs ached and felt weak. He took a drink of Gatorade and too
Technique of food processing Freezing is another ancient technique of food processing, which allows the transportation of perishable food items for long distances from producti
what are the chordata?
What is Carbohydrates? Carbohydrates : Carbohydrates function mainly as immediate sources of energy, stored energy such as starch, and structural components of cells. Carbohyd
Explain the Process of Solubility test? This test is given by all monosaccharides and disaccharides. Polysaccharides are not soluble in cold water. Principle All monosa
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