Principles of Human Physiology (6th Edition)
6th Edition
ISBN: 9780134169804
Author: Cindy L. Stanfield
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 7, Problem 7E
If the membrane potential of a neuron becomes more negative than it was at rest, then the neuron is________ in this state, the neuron is_____excitable.
- depolarized; more
- hyperpolarized; more
- depolarized; less
- hyperpolarized; less
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
A neuron receiving a large enough signal, a resting potential changes and produces electrical impulse called ___________.
After an action potential is fired, the neuron returns to its resting state with the help of...
1. The synapse
2. Neurotransmitters
3. Reuptake
4. the sodium potassium pump
The axon hillock of a neuron reaches the threshold of excitation and the membrane potential becomes completely reversed. Then, suddenly, the membrane potential begins to return to resting membrane potential. What is the event that triggers this return to resting potential?
A.
Na+ channels close in a voltage-dependent manner
B.
Na+ channels close in a time-dependent manner
C.
Na+ channels close in a chemically-dependent manner
D.
Na+ channels open in a voltage-dependent manner
Chapter 7 Solutions
Principles of Human Physiology (6th Edition)
Ch. 7.2 -
Name the different parts, divisions, and...Ch. 7.2 - Prob. 7.1.2QCCh. 7.2 - Prob. 7.1.3QCCh. 7.3 - Prob. 7.2.1QCCh. 7.3 - Prob. 7.2.2QCCh. 7.3 - If channels that permitted both sodium ions and...Ch. 7.4 - Prob. 1CTQCh. 7.4 - Prob. 2CTQCh. 7.4 - Prob. 3CTQCh. 7.4 - Prob. 7.3.1QC
Ch. 7.4 - Prob. 7.3.2QCCh. 7.4 - Prob. 7.3.3QCCh. 7.4 - During the depolarization of an action potential,...Ch. 7.4 - Compare the gating mechanisms of the voltage-gated...Ch. 7.4 - During which phase of an action potential are the...Ch. 7.4 - Prob. 7.5.1QCCh. 7.4 - Prob. 7.5.2QCCh. 7.4 - Prob. 7.5.3QCCh. 7.4 - Prob. 1aCTQCh. 7.4 - Prob. 2aCTQCh. 7.4 - Prob. 3aCTQCh. 7.5 - Prob. 7.6.1QCCh. 7.5 - Prob. 7.6.2QCCh. 7.5 - Prob. 7.6.3QCCh. 7 - Prob. 1ECh. 7 - Neurotransmitters are released most commonly from...Ch. 7 - If a cation is equally distributed across the cell...Ch. 7 -
The depolarization phase of an action potential...Ch. 7 - During the relative refractory period, a second...Ch. 7 - Prob. 6ECh. 7 - If the membrane potential of a neuron becomes more...Ch. 7 - Prob. 8ECh. 7 - Prob. 9ECh. 7 - Prob. 10ECh. 7 - Prob. 11ECh. 7 - Prob. 12ECh. 7 - Prob. 13ECh. 7 - Prob. 14ECh. 7 - Which Of the following statements about graded...Ch. 7 -
What are the subdivisions of the peripheral...Ch. 7 -
Information from the periphery is brought to the...Ch. 7 -
Which cell type is more abundant in the nervous...Ch. 7 - Voltage-gated calcium channels are located in...Ch. 7 - Prob. 20ECh. 7 - Prob. 21ECh. 7 - Prob. 22ECh. 7 - Prob. 23ECh. 7 - Prob. 24ECh. 7 - The electrochemical force for potassium ions when...Ch. 7 -
Both sodium and potassium channels have...Ch. 7 - Prob. 27ECh. 7 -
In myelinated axons, action potentials are...Ch. 7 -
The Na+ Ka+ pump causes the repolarization phase...Ch. 7 -
When a neuron is at the peak of an action...Ch. 7 - Prob. 31ECh. 7 - Prob. 32ECh. 7 - Prob. 33ECh. 7 - Prob. 34ECh. 7 - Prob. 35ECh. 7 -
Muscle cells, like neurons, are excitable cells...Ch. 7 - Prob. 37ECh. 7 - Prob. 38ECh. 7 -
Predict what would happen to the resting...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Match each region of the central nervous system with some of its functions.arrow_forwardNeurons contain ________, which can receive signals from other neurons. a. axons b. mitochondria c. dendrites d. Golgibodiesarrow_forwardStellate cells initially process sensory input to the cortex, whereas pyramidal cells send fibers from the cortex to terminate on efferent motor neurons. (True or false)arrow_forward
- A(n)______neuron has one axon and one____ dendrite extending directly from the cell body. unipolar bipolar multipolar pseudounipolararrow_forwardWhen EPSP and IPSP occur simultaneously the postsynaptic membrane :-a- becomes depolarizedb- becomes hyperpolarizedc- initiates an action potentiald- shows potential changes that depend upon the summation of their effectsarrow_forwardWhich of the following would occur if a neuron was experimentally stimulated simultaneously at both ends? The action potentials would pass in the middle and travel to the opposite ends The action potentials would stop as they meet in the middle. The stronger action potential would override the weaker action potential. Summation would occur when the action potentials meet in the middle, resulting in a larger action potential.arrow_forward
- When a neuron fires an action potential, the information travels through the axon,the dendrites, and the cell body, but not in that order. Place these three structures in the correct order.arrow_forwardThe changes in membrane potential when a neuron is transmitting information is called ..... threshold action potential chemical potential resting potentialarrow_forwardWhich is the correct order of the firing of a neuron? a. resting potential, threshold, action potential, refractory period b. resting potential, threshold, refractory period, action potential c. action potential, resting potential, refractory period, threshold d. threshold, resting potential, refractory period, action potentialarrow_forward
- In the resting state, before or long after an action potential occurs, the activation gates of voltage regulated sodium channels are _____, the inactivation gates of the voltage regulated sodium channels are _____, and the voltage regulated potassium channels are _____arrow_forwardIn what way does the interior surface of the cell membrane of a resting (non-conducting) neuron differ from the external environment? The interior is: positively charged and contains less sodium. negatively charged and contains less sodium. negatively charged and contains less potassium positively charged and contains more sodium.arrow_forward
arrow_back_ios
arrow_forward_ios
Recommended textbooks for you
Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax College
Human Biology (MindTap Course List)BiologyISBN:9781305112100Author:Cecie Starr, Beverly McMillanPublisher:Cengage Learning
Biology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStax
Human Physiology: From Cells to Systems (MindTap ...BiologyISBN:9781285866932Author:Lauralee SherwoodPublisher:Cengage Learning
Concepts of Biology
Biology
ISBN:9781938168116
Author:Samantha Fowler, Rebecca Roush, James Wise
Publisher:OpenStax College
Human Biology (MindTap Course List)
Biology
ISBN:9781305112100
Author:Cecie Starr, Beverly McMillan
Publisher:Cengage Learning
Biology 2e
Biology
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:OpenStax
Human Physiology: From Cells to Systems (MindTap ...
Biology
ISBN:9781285866932
Author:Lauralee Sherwood
Publisher:Cengage Learning
Intro to Cell Signaling; Author: Amoeba Sisters;https://www.youtube.com/watch?v=-dbRterutHY;License: Standard youtube license