Imagine that scientists have just discovered a weird new marine tunicate at extreme depths of the ocean. They have a novel kind of neurotransmitter – maritonin – that binds to the “maritonin” receptor, which is permeable to negatively charged iodine ions (which are high concentration in seawater and in the extracellular fluid of this species). What do you predict would happen to the postsynaptic neuron when maritonin is released? Depolarization of the postsynaptic cell, increasing the chance of an action potential Hyperpolarization of the postsynaptic cell, decreasing the chance of an action potential  Depolarization of the postsynaptic cell, decreasing the chance of an action potential Hyperpolarization of the postsynaptic cell, increasing the chance of an action potential   In a central pattern generator, the pacemaker neural cells both have inhibitory inputs on each other. This is key for preventing opposing muscles from contracting at the same time (e.g., if your biceps and triceps contracted simultaneously). What is the term for this? Neural adaptation Post-inhibitory rebound Reciprocal inhibition Reciprocity

Human Physiology: From Cells to Systems (MindTap Course List)
9th Edition
ISBN:9781285866932
Author:Lauralee Sherwood
Publisher:Lauralee Sherwood
Chapter4: Principles Of Neural And Hormonal Communication
Section: Chapter Questions
Problem 4TAHL: Assume presynaptic excitatory neuron A terminates on a postsynaptic cell near the axon hillock and...
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Imagine that scientists have just discovered a weird new marine tunicate at extreme depths of the ocean. They have a novel kind of neurotransmitter – maritonin – that binds to the “maritonin” receptor, which is permeable to negatively charged iodine ions (which are high concentration in seawater and in the extracellular fluid of this species). What do you predict would happen to the postsynaptic neuron when maritonin is released?

  1. Depolarization of the postsynaptic cell, increasing the chance of an action potential
  2. Hyperpolarization of the postsynaptic cell, decreasing the chance of an action potential 
  3. Depolarization of the postsynaptic cell, decreasing the chance of an action potential
  4. Hyperpolarization of the postsynaptic cell, increasing the chance of an action potential

 

In a central pattern generator, the pacemaker neural cells both have inhibitory inputs on each other. This is key for preventing opposing muscles from contracting at the same time (e.g., if your biceps and triceps contracted simultaneously). What is the term for this?

  1. Neural adaptation
  2. Post-inhibitory rebound
  3. Reciprocal inhibition
  4. Reciprocity
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