Why neuron a is a healthy neuron, Biology

Assignment Help:

Why Neuron A is a healthy neuron

Neuron A is a healthy neuron with all the usual ion channels.  When at rest with a membrane voltage of R millivolts, neuron A produces no action potentials.  The voltage threshold for an action potential in neuron A is T millivolts.  T is greater than R; T is less than zero.  In addition, neuron A's membrane includes the membrane-spanning molecule Z with an ion channel that opens when neurotransmitter Y binds to the Y receptor site on the extracellular surface of Z.  The Nernst equilibrium potential for Z's ion channel is E millivolts.  Neuron B synapses on neuron A; neuron B's neurotransmitter is neurotransmitter Y.  Which of the following statements are true when neuron A is initially at rest and neuron B releases neurotransmitter Y?

  A.  If the value of E is equal to R, and if chloride is the only ion that passes through open Z channels, then Y's binding to its receptor site on Z in neuron A produces no change in the amount of intracellular chloride ions in neuron A.

  B.  If the value of E is equal to R, and if chloride is the only ion that passes through open Z channels, then Y's binding to its receptor site on Z in neuron A produces no change in the chloride conductance of the plasma membrane of neuron A.

  C.  If the value of E is zero and if both sodium ions and potassium ions pass through open Z channels, then Y's binding to its receptor site on Z in neuron A produces no change in the amount of intracellular sodium ions in neuron A.

 


Related Discussions:- Why neuron a is a healthy neuron

Define carbohydrate requirement for cancer patients, Define Carbohydrate re...

Define Carbohydrate requirement for cancer patients? Adequate amount (60% of total energy) of carbohydrates should be provided. If a very high calorie diet is being given, emph

Explain didanosine and its adverse effects, Didanosine (ddl, Videx)   Di...

Didanosine (ddl, Videx)   Didanosine is available as buffered tablets, buffered or non-buffered powder, and non-buffered enteric-coated capsules (Videx EC). Adverse effects

Compound leaf, Compound leaf is the leaf in which the blade forms small le...

Compound leaf is the leaf in which the blade forms small leaflets. Compound leaves which have several small leaflets originating from the central axis are termed as pinnately comp

Ultrasonography, Ultrasonography: Ultrasounds are sound waves wit...

Ultrasonography: Ultrasounds are sound waves with a frequency of higher than the upper range of human hearing i.e., approximately 20,000 cycles per second (20 kilohertz).

Mountain forest ecosystem as life support systems, Mountains and their fore...

Mountains and their forest ecosystems are regarded as the water towers of the world. A good example is the extraordinarily massive Himalayan Mountains which have shaped the climate

Which type of defense cell do viral infections, Q. Of which type of defense...

Q. Of which type of defense cell do viral infections stimulate the multiplication? The main leukocytes that generally participate and multiply in the defense against viral infe

What is leghemoglobin, The  nitrogenase  complex  is  extremely  sensitive ...

The  nitrogenase  complex  is  extremely  sensitive  to  inactivation  by  O2,  so  the enzyme  must be protected  from this reactive  substance.  During the root nodules of legumi

Explain oligosaccharides, Oligosaccharides Compounds containing 2 to 6 ...

Oligosaccharides Compounds containing 2 to 6 monosaccharides units joined by a glycosidic  linkage.

Determine the occurrence of folic acid, Occurrence of folic acid Folic...

Occurrence of folic acid Folic acid is an active principle widely  occurring in the animal and vegetable kingdom. Richest sources are liver, dark  green leafy vegetables, bean

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