Question 2: Action potentials 1. Aneuron is isolated and placed in a bath of normal ECF solution. The initial segment of the axon is depolarized to threshold by a stimulus (blue arrow (AP) is generated as shown in the diagram below. ) and a normal action potential A. Leak Na+ channels are open B. Leak K+ channels are open C. V-gated Na+ channels are open D. V-gated Na+ channels are inactive E. V-gated K+ channels are open 2 1. 1 4 5 Match the labels on the graph (1-5) with the TRUE statements from choices A-E. It is possible that more than 1 letter choice may be a true statement at each label. List all TRUE statements for each label. At label 1: At label 2: At label 3: At label 4: At label 5:

Question 2: Action potentials 1. Aneuron is isolated and placed in a bath of normal ECF solution. The initial segment of the axon is depolarized to threshold by a stimulus (blue arrow (AP) is generated as shown in the diagram below. ) and a normal action potential A. Leak Na+ channels are open B. Leak K+ channels are open C. V-gated Na+ channels are open D. V-gated Na+ channels are inactive E. V-gated K+ channels are open 2 1. 1 4 5 Match the labels on the graph (1-5) with the TRUE statements from choices A-E. It is possible that more than 1 letter choice may be a true statement at each label. List all TRUE statements for each label. At label 1: At label 2: At label 3: At label 4: At label 5:

Principles Of Pharmacology Med Assist

6th Edition

ISBN:9781337512442

Author:RICE

Publisher:RICE

Chapter27: Medications That Affect The Nervous System

Section: Chapter Questions

Problem 25RQ

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Question 32 Immediately after an action potential has peaked, which of the following channels will open? A) voltage gated potassium channels. B) Chemically gated chloride channels C) Voltage gated sodium channels D) Voltage gated calcium channels please give a brief explanation for each one, why correct or incorrect.
Question 25 The inferior surface of a neuron’s plasma membrane at resting membrane potential will have--- A) Negative charge and contains less sodium than outside of the cell B) Positive charge in contains more sodium than outside of the cell C) Negative charge and contains more sodium than outside of the cell D) Positive charge in contains less sodium than outside of the cell The term central nervous system refers to? Please give brief explanation why each is correct or incorrect
Voltage-gated Na+ channels open upon leaching what state? resting potential threshold repolaiization overshoot
Which factors determine the resting membrane potential? Explain why the resting membrane potential is never really the value calculate by the Nernst equation for the potassium equilibrium potential. comments : please answer me in a correct way to hence my knowledge and for my better understanding
Question 23) For these three situations below, describe whether there are changes in humoral, viscero-motor, and somatic motor responses. If there are changes, describe them. A) A mouse mutant or MC4 receptors in the hypothalamic lateral area do not bind to alpha-MSH peptide B) A mutant mouse or MC4 receptors in the hypothalamic paraventricular nucleus does not bind to alpha-MSH peptide C) A mutant mouse or the alpha-MSH neurons do not synthesize alpha-MSH
Question 4 A monosynaptic reflex differs from a polysynaptic reflex by the presence of the presence of many efferent neurons multiple stimuli an interneuron a multi -faceted response
True or false and explain why. According to the Goldman equation, resting membrane potential of a neuron will become more positive than the typical -70 mV if concentration of extracellular Na is increased above the normal levels but the permeability of the membrane to Na+ is the same.
Please ASAP. Thanku. Question 24 At the equilibrium potential for Na+, which of the following is true? Na+ channels are closed There is no net movement of Na+ Na+ current is inward K+ current is inward
Question 15 Which of the following is not a function of the autonomic nervous system? A) Innervation of glands B) Innervation of cardiac muscle C) Innervation of a smooth muscle of the digestive tract D) Innervation of skeletal muscle. Please quick explain why each answer right or wrong
Question:- There are multiple potential causes for seizures. Determine which changes to protein function could potentially account for the excess neuronal signaling that leads to seizures in your patient. (Select all that apply!) A. decreased activity of voltage‑gated Ca2+ channels B. decreased sensitivity of chemically gated Cl− channels C. increased activity of voltage‑gated Na+ channels D. increased sensitivity of chemically gated K+ channels. write the answer first then explain the process and mechanism.
Be able to describe the resting membrane potential of a neuron what is possibly happening versus what is actively happening to maintain negative -70mv
Conditions: [Na+] outside = .3 mM [Na+] inside the presynaptic cell = .01 mM [dopamine] inside = .5 mM [dopamine] outside = .001 mM ΔGinward = RT ln [X] inside/[X] outside + z F Vm F = 23,000 cal/mol V R = 1.987 cal/ mol K Membrane potential is .07 V Temperature is 273 K Using the information above and image please answer these questions : Is the concentration of sodium higher on the outside or the inside of the presynaptic cell? Would the movement of sodium be active or passive moving OUT of the presynaptic cell? SHOW your work.