What is frog central nervous system, Biology

Assignment Help:

What is frog central nervous system

Consider Neuron B in the frog central nervous system whose plasma membrane has a newly discovered ligand-gated ionotropic receptor, named the LGD receptor.  The channel in the same molecular complex as the LGD receptor is termed the LGD receptor channel and is a monovalent cation channel that, when open, is permeable to both sodium and potassium.  The Nernst equilibrium potential for sodium in Neuron B is +60 mV, and the Nernst equilibrium potential for potassium in Neuron B is -90 mV. The threshold for an action potential in Neuron B is -55 mV and the resting potential for Neuron B is -70 mV.  LGD is an agonist for the ligand-gated ionotropic receptor.  When LGD binds to its binding site, there is an increase in conductance of both sodium and potassium in the LGD receptor channel.  Neuron A synapses onto Neuron B.  Neuron A's transmitter is LGD.

A. When the LGD receptor channel is open in Neuron B, its potassium conductance equals its sodium conductance.  In response to an action potential in Neuron A, then there will be an excitatory postsynaptic potential in Neuron B.

B. When the LGD receptor channel is open in Neuron B, its potassium conductance equals four times its sodium conductance.  In response to an action potential in Neuron A, then there will be a voltage increase and an action potential in Neuron B.

C. When the LGD receptor channel is open in Neuron B, its potassium conductance equals nine times its sodium conductance.  In response to an action potential in Neuron A, then there will be an inhibitory postsynaptic potential in Neuron B.

 


Related Discussions:- What is frog central nervous system

How many different molecules composed, How many different molecules compose...

How many different molecules composed of (A) two (B) three, and (C) four amino acids, linked together by peptide bonds, can be made from the set of 20 naturally occurring amino aci

What is indications operation single ventricle physiology, What is Indicati...

What is Indications for Operation Single Ventricle Physiology ? The operation is indicated in patients with single ventricle physiology. Fontan operation is also indicated in p

Why is iodine important for human beings, Why is iodine important for human...

Why is iodine important for human beings? Iodine is a fundamental chemical element for the proper functioning of the thyroid since it is part of the hormones produced by this g

Reproductive system of asteroidea, Reproductive System of Asteroidea S...

Reproductive System of Asteroidea Sexes are separate in several asteroids. There are ten (10) gonads, two in each arm. They emerge tuft-like or as cluster of grapes. Mature go

Explain the adverse effects of menactra, Adverse effects of menactra The...

Adverse effects of menactra The most common adverse reactions to Menactra include headache, fatigue and malaise, in addition to pain, redness and induration at the site of injec

List a few shortcomings of native starches, List a few shortcomings of nati...

List a few shortcomings of native starches which make it unacceptable in certain food applications. Lack of free-flowing properties of water repellence of the starch granules,

What are sensory receptors, What are sensory receptors? Sensory recepto...

What are sensory receptors? Sensory receptors are structures specialized in the acquiring of information, such as temperature, mechanical pressure, pH, chemical environment and

Explain about the macro minerals, Explain about the Macro Minerals? Pre...

Explain about the Macro Minerals? Previously we learnt about the structure, properties, deficiencies/toxicity and recommended dietary intakes of several vitamins. In this unit,

Plasma and its composition, PLASM A - It is slightly alkaline non-l...

PLASM A - It is slightly alkaline non-living intercellular substance which constitutes about 60% part of the blood. It is a pale yellow but transparent and clear fluid.

Myoglobin, Myoglobin We can build up the structure of haemoglobin by c...

Myoglobin We can build up the structure of haemoglobin by considering a single unit or monomeric form caned myoglobin. This consists of a single polypeptide chain the globin i

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