Dr. Brainy creates a nerve cell that is only permeable to Caesium ions (Cs+1) at rest.She measures that the concentration of Caesium is 400mM outside the cell andonly 50 mM inside the cell. She calculates the Equilibrium potential for Cs+¹ (Ecs) tobe +35 mV.If Dr. Brainy uses an electrode to briefly hyperpolarize the cell and then removes thestimulus. She notices that the membrane potential drifts back towards:0 mV+58 mV+15 mV+ 35 mV

Option a: This option is incorrect because This value signifies that there's no driving force for…

Answered: Dr. Brainy creates a nerve cell that is…

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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Similar questions

Caffeine and nicotine have excitatory effects because they: reduce the threshold for excitation increase the threshold for excitation open potassium ion leakage channels open chemically-gated chloride ion channels close chemically-gated calcium ion channels ( explain deeply with step by step type the answer).
Is an action potential more or less likely under these conditions? Explain.
Which of the following cells helps control the concentration of ions in the chemical environment surrounding the neurons? satellite cells astrocytes Schwann cells oligodendrocytes two of the above
Each of the following is a correct relationship between action potential phase and channel status except Select one: O A. hyperpolarizing phase; K channels open O B. hyperpolarizing phase: Na channels open O C. depolarization: Na channels open OD.repolarizing phase: Na channels closed O E repolarizing phase: K channels open ch
At which point in the graph do voltage-gated potassium channels open? (Base your answer to this question on the graph below depicting an action potential.) A B C D E
Why does the The CAP amplitude and period both increased as a stimulus amplitude is increased? And why would a Ringer's with Ca+2 reach a maximum compound action potential in a lower stimulus amplitude than the normal Ringer's solution ?
Show a complete circuit diagram of the model of the neuron using the specific numerical values for each component: potassium ion concentration outside: 4.0 mmol/L potassium ion concentration inside: 77.5 mmol/L
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.
Rank the action potential starting from the neuron at resting state
Transcranial Magnetic Stimulation causes an involuntary motor output in response to a magnetic stimulation over the skull. Why do we see this output? Include the following concepts in your response: •neuroanatomy •central versus peripheral nervous system •neuron structure and direction of information flow •hyper versus depolarization •specific ions •membrane potential •diffusion and electrostatic pressure
After the depolarisation phase of an action potential, the resting potential is restored by ______. Question 15 options: A) the opening of voltage-gated potassium channels and the closing or inactivation of sodium channels. B) the opening of more voltage-gated sodium channels. C) a decrease in the membrane's permeability to potassium and chloride ions following closing of the chloride-potassium pump. D) a brief inhibition of the sodium-potassium pump.
The action potential generated in the squid giant axon requires voltage-gated potassium channels. Describe the shape of the action potential if these channels are blocked using TEA (Tetraethylammonium).

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