Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 35, Problem 8RQ
For a neuron to fire an action potential, its membrane must reach.
- hyperpolarization
- the threshold of excitation
- the refractory period
- inhibitory postsynaptic potential
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
Which of the following describes a threshold potential?
A brief reversal of the charge difference across a neuron's plasma membrane
The membrane potential at which voltage-gated sodium channels in a neuron axon open, causing an action potential
The membrane potential of a neuron at rest
Which of the following are the likely explanations for the failure of a postsynaptic neuron to trigger an action potential? Select all that apply.
The EPSPs are neutralized by the neurotransmitter
The summation of IPSPs and EPSPs is insufficient to depolarize the cell to threshold
The synapses generating the EPSPs are too close to the axon hillock
The synapses generating the EPSPs are too far from the axon hillock
Which of the following can increase the likelihood of a neuron generating an action potential?
tetrodotoxin (TTX)
reducing the external concentration of K+
decreased diffusion of K+ through leak channels out of the neuron
All of the above
Chapter 35 Solutions
Biology 2e
Ch. 35 - Figure 35.3 Which of the following statements is...Ch. 35 - Figure 35.11 Potassium channel blockers, such as...Ch. 35 - Figure 35.26 Which of the following statements is...Ch. 35 - Neurons contain _____ which can receive_____...Ch. 35 - A(n)______neuron has one axon and one____ dendrite...Ch. 35 - Glia that provide myelin for neurons in the brain...Ch. 35 - Meningitis is a viral or bacterial infection of...Ch. 35 - For a neuron to fire an action potential, its...Ch. 35 - After an action potential, the opening of...Ch. 35 - What is the term for protein channels that connect...
Ch. 35 - Which of the following molecules is not involved...Ch. 35 - Thelobe contains the visual cortex frontal...Ch. 35 - Theconnects the two cerebral hemispheres. limbic...Ch. 35 - Neurons in Thecontrol motor reflexes. thalamus...Ch. 35 - Phineas Gage was a 19th century railroad worker...Ch. 35 - Activation of the sympathetic nervous system...Ch. 35 - Where are parasympathetic preganglionic cell...Ch. 35 - ______ is released by motor nerve endings onto...Ch. 35 - Parkinson’s disease is a caused by the...Ch. 35 - __________ medications are often used to treat...Ch. 35 - Strokes are often caused by. neurodegeneration...Ch. 35 - Why is it difficult to identify the cause of many...Ch. 35 - Why do many patients with neurodevelopmentaJ...Ch. 35 - How are neurons similar to other cells? How are...Ch. 35 - Multiple sclerosis causes demyelination of axons...Ch. 35 - Many neurons have only a single axon, but many...Ch. 35 - How does myelin aid propagation of an action...Ch. 35 - What are the main steps in chemical...Ch. 35 - Describe how long-term potentiation can lead to a...Ch. 35 - What methods can be used to determine the function...Ch. 35 - What are the main functions of the spinal cord?Ch. 35 - Alzheimer’s disease involves three of the four...Ch. 35 - What are the main differences between the...Ch. 35 - What are the main functions of the sensory somatic...Ch. 35 - Describe how the sensory-somatic nervous system...Ch. 35 - Scientists have suggested that the autonomic...Ch. 35 - What are the main symptoms of Alzheimer’s disease?Ch. 35 - What are possible treatments for patients with...
Additional Science Textbook Solutions
Find more solutions based on key concepts
2 Of the uterus, small intestine, spinal cord, and heart, which is/are in the dorsal body cavity?
Anatomy & Physiology
15. A good scientific hypothesis is based on existing evidence and leads to testable predictions. What hypothes...
Campbell Biology: Concepts & Connections (9th Edition)
WHAT IF? As a cell begins the process of dividing, its chromosomes become shorter, thicker, and individually vi...
Campbell Biology in Focus
Match the people in column A to their contribution toward the advancement of microbiology, in column B. Column ...
Microbiology: An Introduction
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
- A neuron responds to adequate stimulation with _______, a type of self-propagating signal.arrow_forwardAssume presynaptic excitatory neuron A terminates on a postsynaptic cell near the axon hillock and presynaptic excitatory neuron B terminates on the same postsynaptic cell on a dendrite located on the side of the cell body opposite the axon hillock. Explain why rapid firing of presynaptic neuron A could bring the postsynaptic neuron to threshold through temporal summation, thus initiating an action potential, whereas firing of presynaptic neuron B at the same frequency and the same magnitude of EPSPs may not bring the postsynaptic neuron to threshold.arrow_forwardIf a potassium channel is held open for even longer, leading to an even bigger hyperpolarization of the cell what will happen in an afferent neuron? action potentials will have a larger amplitude action potentials will have a small amplitude less frequent action potentials in the neuron more frequent action potentials in the neuronarrow_forward
- Which of the following occurs immediately after the peak of an action potential? The membrane potential begins to repolarize O Voltage gated potassium channels are open Ⓒ Voltage gated sodium channels are inactivated The cell is in the absolute refractory period All of the abovearrow_forwardWhich of the following statements is TRUE about the depolarization phase of action potential? Group of answer choices: Na-K pump initiates depolarization. Potassium ion channels quickly opens to allow efflux of ions. Depolarization is characterized by the movement of calcium ions out of the cell. Depolarization is primarily triggered by opening of sodium ion channels asap plsarrow_forwardWhen a neuron is a rest, the sodium ions flow through the membrane at a very low rate. Why is this? The sodium ions are negatively charged, and are not drawn into the negatively charged neuron Sodium ions are much larger than calcium, potassium, or chlorine ions Sodium ions always flow through the membrane at a very low rate, whether the neuron is at rest or not at rest The sodium ion channels are closed when a neuron is at restarrow_forward
- When 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_forwardDuring the resting state, a neuron is: polarized with sodium ions outside the cell and potassium ions inside the cell restoring the ionic conditions utilizing the sodium-potassium pump depolarizing and generating an action potential propagating the action potential repolarizing as potassium ions diffuse out of the cellarrow_forwardWhich statement(s) regarding ions is true when a neuron is at rest? Positively charged cations are attracted to the intracellular fluid Positively charged anions are attracted to the intracellular fluid Negatively charged anions are drawn to the intracellular fluid Negatively charged anions are balanced across the cell membranearrow_forward
- If the membrane potential at the axon hillock becomes subthreshold, an action potential will be fired. True or falsearrow_forwardWhat word is used to describe the summation of excitatory and inhibitory stimuli by a neuron? synapse impulse integration action potentialarrow_forwardExcitatory neurotransmitters open up some sodium ion channels in the postsynaptic dendrite. This allows some sodium ions (Na+) to enter the postsynaptic dendrite, making the membrane potential more positive and bringing it closer to the threshold potential. This increases the likelihood of an action potential. Inhibitory neurotransmitters open up ion channels in the postsynaptic membrane for positive potassium ions (K+) to flow out OR negative chloride ions (Cl-) to flow in. Whether potassium ions go out or chloride ions go in, the postsynaptic cell becomes more negative than the resting membrane potential (further from the threshold potential). This decreases the likelihood of an action potential. The effect of the inhibitory neurotransmitter on the postsynaptic membrane is to a. maintain the resting potential b. hyperpolarize the postsynaptic membrane c. depolarize the postsynaptic membrane d. decrease the threshold levelarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Human Physiology: From Cells to Systems (MindTap ...BiologyISBN:9781285866932Author:Lauralee SherwoodPublisher:Cengage Learning
Human Biology (MindTap Course List)BiologyISBN:9781305112100Author:Cecie Starr, Beverly McMillanPublisher:Cengage Learning
Human Physiology: From Cells to Systems (MindTap ...
Biology
ISBN:9781285866932
Author:Lauralee Sherwood
Publisher:Cengage Learning
Human Biology (MindTap Course List)
Biology
ISBN:9781305112100
Author:Cecie Starr, Beverly McMillan
Publisher:Cengage Learning
Nervous System - Get to know our nervous system a bit closer, how does it works? | Neurology; Author: FreeMedEducation;https://www.youtube.com/watch?v=6O-0CVAgaEM;License: Standard youtube license