Answered: O During depolarization, the membrane…

O During depolarization, the membrane potential voltage a. gets farther from 0 b. gets closer to 0 and then returns to its original value O c. doesn't change d. gets closer to 0

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,...

See similar textbooks

Related questions

Q: This patient's hypokalemia was due to his profuse sweating the previous day and the subsequent loss…

A: Potassium is a mineral, our body cells need this, it regulates our major body parts functions such…

Q: QUESTION 9 What is the relationship between action potential conduction velocity and axonal…

A: Introduction :- The nervous system's ability to transmit information is constrained by the rate of…

Q: You are recording the electrical activity of a cell body with a resting membrane potential of -70…

A: Given; Resting membrane potential of the cell= -70mV No. of stimuli detected by the cell= 3 from…

Q: Action potentials are normally initiated at the axon hillock because a. there is a particularly high…

A: When the membrane potential of a given cell location rapidly rises and falls, an action potential…

Q: Under which conditions could the opening of a chloride channel actually depolarize a neuron rather…

A: Ion channels are transmembrane proteins that allows specific Ions to move across the membrane along…

Q: What guarantees that there are unidirectional action potentials? Choice A threshold B.…

A: Action potential generates when the neurons want to pass the information along the body from its…

Q: Which of the following primarily reflects the opening of voltage-gated Na* channels? A. The resting…

A: Voltage-gated Na+ channels are gated, meaning that they can be opened or closed in response to…

Q: Heurotransmitters and their respective receptors influence the propagation of action potentials. Why…

A: Hormones are defined as the type of chemical messengers that are directly released into the…

Q: Voltage-gated Na+ channels are.... (select all that apply). Group of answer choices: A. Opened by…

A: The channels are basically membrane proteins that act as transport protein through which various…

Q: This graph shows the relative voltage of a neuron's cytoplasm near the plasma membrane relative to…

A: * There are three stages in membrane potential Depolarization Repolarization Hyperpolarisation…

Q: Potassium flows the cell through leak channels, its gradient. into, down out of , up into , up out…

A: Generation of nerve impulse in nerve fibre depends on distribution of sodium and potassium in and…

Q: Which of the following is true of graded potentials? a. They always reach the same voltage o b. They…

A: Neurons are the basic structures and functional units of the nervous system. The axon or the nerve…

Q: atch the description with the statement that best describes the following statements…

A: When a cell is not stimulated, its resting membrane potential is defined as the electrical potential…

Q: In a neuron, which of the following types of transport occur passively through channel proteins?…

A: Movement of ions across membranes can be active or passive. Active movement involves the need of ATP…

Q: The purpose of gap junction is Question options: to provide intercellular communication…

A: Gap junctions develop when a set of six membrane proteins called connexins form an elongated,…

Q: What makes an impulse move down the line…i.e. what causes the next zone to depolarize? A. the Na+/K+…

A: A neuron has the capability of receiving inputs from another neuron. If this input is strong, then…

Q: During depolarization, the membrane potential becomes more positive. O True O False

A: Every cell in our body has cell membrane that separates it from the outer environment tissue, The…

Q: Depolarization and repolarization changes that occur during the action potential are produced by…

A: Introduction: Just neurons and muscle cells are fit for creating an action potential and that…

Q: The cleft is a flat disk between the two membranes, radius L= 250 nm and thickness d=20 nm. The…

A: Acetylcholine is a neurotransmitter that is responsible for the dilation of blood vessels,…

Q: Resting membrane potential: a. Is due to difference in permeability of cell membrane to ions b.…

A: Resting membrane potential is necessary for the functioning of the neurons and the muscle cells. Any…

Q: - For the resting membrane potential: a- The inside is negative in comparison with the outside. b-…

A: Resting membrane potential is the voltage across the plasma membrane before the actual action…

Q: 14. The action potential in excitable cells is ‘activated’ when the cell membrane reaches the…

A: The action potential is a phenomenon of excitable cells such as nerve and muscle and consists of a…

Q: .dחaMa"in it the

A: The equilibrium potential is the particular membrane potential where the net flow through any open…

Q: What statement best describes the "threshold potential" of a neuron? a. It is the equilibrium…

A: The neuron is the chief component and the basic unit of the nervous system in advanced organisms.…

Q: Select one: O A. hyperpolarizing phase; K channels open B. hyperpolarizing phase: Na channels open…

A: The action potential is the change in the electric potential across the plasma membrane.

Q: During an action potential _______ A. Na+ flows out of cell and causes depolarization B. K+…

A: A characteristic pattern of rapid rise and subsequent fall in voltage or membrane potential across a…

Q: Which of the following statements relating to depolarization is incorrect? a. it is a reduction in…

A: The central nervous system consists of numerous specialized cells called neurons. The neurons are…

Q: The inward rectifier does not: A. Conduct potassium. B. Carry inward current during the action…

A: Ion channels are transmembrane proteins that can form pores for the passage of ions through the…

Q: factors responsible for a negative resting membrane potential include: check all that apply: a.…

A: We can say that The negative resting membrane potential of a cell is the membrane potential that is…

Q: A hyperpolarized cell can be generated when: Group of answer choices A. ligand-gated ionotropic…

A: Introduction Ionotropic receptors, also known as ligand-gated ion channels (LICs, LGIC), are a…

Q: Nicotinic ACh receptor (LGIC) involve the movement of what ion across the membrane? Group of answer…

A: Nicotinic Acetylcholine receptors are a type of ligand-gated ion channels involved in neuromuscular…

Q: The strength of a stimulus is communicated to the Axon terminal button by_ of action potentials a.…

A: DISCLAIMER: Since you have asked multiple questions, we have solved the first question for you. If…

Question

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

Step 2

Step 3

Step 4

Trending now

This is a popular solution!

Step by step

Solved in 4 steps

SEE SOLUTION Check out a sample Q&A here

Similar questions

There is a type of toxin found in the liver of the puffer fish that prevents the opening of voltage-gated Na+ channels in neurons. The effect of this toxin is to: Group of answer choices A. prevents the initiation of the action potential B. depolarizes the membrane potential and maintains it depolarized C. prolongs the return of the membrane potential to the resting level D. increases the duration of the action potential
19. The resting potential is restored by A. Stimulation B. Sodium potassium pump C. Passive transport D. Osmosis
On the graph above, when do the sodium ion channels close? Select one: a. between 0.2 ms and 0.5 ms, which is when depolarization occurs b. at 0.2 ms, which is when depolarization occurs c. at 0.5 ms, which is when repolarization begins d. between 0.5 ms and 0.8 ms, which is when repolarization occurs
1.A poison causes a drastic rise inE value with stimulation of the membrane.Thereafter membrane is slow to return towards resting membrane potential and levels off several millivolts above the threshold potential. This poison has likely affect which feature of the membrane? a) voltage gated na+ channels. b) voltage gated K+ channels. c) Na+/K+ Atp pump 2. All cell membrane demonstrate action potential if stimulated enough? True/False. 3. how many peaks are there in a compound action potential? a)2. b)4 c)6 d)8 4. Increasing the ionic concentration in the salt bridge results in E value increase to a point after which it plateeus. This is evidence brownian movement at work in the ionic solution that is keeping from energy flowing through the bridge with the fidelity that is seen in the metal bridge? True/ False 5. All cell membrane demonstrate action potential if stimulated enough? True or False.
A. There is a lower resistance in the lower panel at the point where voltage is measured. B. There is a greater capacitance in the lower panel at the point where voltage is measured. C. The membrane voltage measured in the lower panel is farther away from the current pulse.
Explain what is going on at sites A, B, C, D, F and G in relation to CHARGE (negative, positive, rising, falling) and open or closed Na+ and K+ ion channels +40 Voltage (mv) O -55 -70 Threshold B A 1 E D 2 3 Time (ms) F 4 G
Excitatory postsynaptic (EPSP'S) the resting membrane potentials A. have little or no effect b Hyperpolarize c. do notchange d. depolarize
What enables action potential to jump from one node of Ranvier to the next? A. Increased LC B. Increased membrane resistance OC. Decreased LC OD. A and B OE. B and C mmmmm
Based on the graph, the threshold voltage appears to be approximately. (Base your answer to this question on the graph below depicting an action potential.) +60 mV. +30 mV. 0 mV. −30 mV. −60 mV.
Which of the following allows the cell to recover from hyperpolarization during an action potential? A. Stimulus gated sodium channels B. voltage gated sodium channels C. voltage gated potassium channels D. sodium/potassium pump
The energy source for movements of Na* and K* during an action potential is a. the Na*/K* ATPase b. the thermal energy in the cell membrane c. the concentration gradients for the ions d. determined by the lipids of the cell membrane e. the negative charge of the extracellular fluid relative to the cytosol
threshold resting membrane potential decrease calcium channels increase action potentials The autonomic nervous system influences the heart rate. A sympathetic signal (norepinephrine) results in opening. This accelerates the process of reaching thereby resulting in a in time between successive action potentials. A parasympathetic signal (acetylcholine) results in the dropping to -70mV. This results in an in time for cells to reach threshold, thereby increasing the time between successive