Becker's World of the Cell (9th Edition)
9th Edition
ISBN: 9780321934925
Author: Jeff Hardin, Gregory Paul Bertoni
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 22, Problem 22.8PS
Multiple Sclerosis and Action Potential Propagation. Multiple sclerosis (MS) is an autoimmune disease that attacks myelinated nerves and degrades the myelin sheath around them. How do you think the propagation of action potentials would be affected in a nerve cell that has been damaged in a patient with MS?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
ENS and how it works. Since it doesn't use or go through the CNS, where does the information go to? Do the ENS neurons go and attach to the Parasympathetic and sympathetic NS or is it something completely different? Also what information can the ENS integrate compared to the other two?
Neurons
a. How does the neuron re-establish its resting membrane potential after an action potential?
-Sodium (Na+) gated channels close
-Sodium (Na+) gated channels open
-Potassium (K+) and sodium (Na+) gated channels close
-Sodium/ potassium pumps (Na+/K+ pumps) exchange ions
b.Which of the ion channels utilizes a passive transport system (in other words, do not require ATP)? Mark all that apply.
-K+ leak channels
-K+ channels (gates)
-Na+ leak channels
-Na+ channels (gates)
-Na+/K+ pumps
c.The absolute refractory period occurs when the neuron is undergoing the action potential and implies it cannot be further stimulated.
True or False
d. After an action potential, as the neuron repolarizes, the resting membrane potential is immediately re-established
True or False
e.Match the type of gate or process with its overall effect on the neuron
So Match each term with the best-fit description.
Terms:
Na+/K+ pump
K+ voltage gate
Resting membrane potential
Hyperpolarization
Na+ voltage gate…
HW1: Motor NS Synaptic Pathways. Match each description to its correct term.
Chapter 22 Solutions
Becker's World of the Cell (9th Edition)
Ch. 22 - Ouabain is an African plant derivative that has...Ch. 22 - You have isolated a toxin from a previously...Ch. 22 - The poison produced by some species of Central and...Ch. 22 - Drugs that affect the reuptake of...Ch. 22 - The Truth About Nerve Cells. For each of the...Ch. 22 - QUANTITATIVE The Resting Membrane Potential. The...Ch. 22 - QUANTITATIVE Patch Clamping. Patch-clamp...Ch. 22 - The Equilibrium Potential. Answer each of the...Ch. 22 - QUANTITATIVE Heart Throbs. An understanding of...Ch. 22 - The All-or-None Response of Membrane Excitation. A...
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
- Modified TRUE or FALSE. Write T if the statement is completely TRUE and if false, change the underlined word/s to make the statement true. 2. A neuron is composed of a cell body, an axon, and action potential. 3. A dendrite moves a signal along an axon.arrow_forwardANATOMY PRACTICE. Name two ways drugs can act pre-synaptically to cause neurotransmitter activity in the synapse to last longer.?arrow_forwardNerve transmission and communication with other neurons. DI it restores the membrane potential the chemical that talks between one neuron and the other neuron the point between the neuron and the muscle transmits impulse to dendrite it carries receptors on its surface it produces the neurotransmitter 1. Neurotransmitter 2. Presynaptic membrane 3. Postsynaptic membrane 4. Nat-K+ pump 5. Neuromuscular junction 6. Axonarrow_forward
- Depolarisation & repolarisation in metaneuron - put the following events in order (from 1 to 4). Membrane potential crosses the threshold potential and an action potential is achieved. Depolarisation occurs when the applied current is sufficient to move membrane potential towards neutral. The neuron's membrane potential drops below the initial resting membrane potential and temporarily becomes refractory to further action potentials. Membrane quickly repolarises by opening of Kt channels, allowing K* ions to leave the cell and charge separation to be re-established.arrow_forwardDepolarisation & repolarisation in metaneuron - put the following events in order (from 1 to 4). Membrane potential crosses the threshold potential and an action potential is achieved. Depolarisation occurs when the applied current is sufficient to move membrane potential towards neutral. The neuron’s membrane potential drops below the initial resting membrane potential and temporarily becomes refractory to further action potentials. Membrane quickly repolarises by opening of K+ channels, allowing K+ions to leave the cell and charge separation to be re-established.arrow_forwardPlease ASAP. Thanku. What is the effect of increasing the activity of HCN (Ih) channels on action potential firing rate?arrow_forward
- HPO. The section is composed of nerve bundle is in turn made up of blood nerve fibers and enclosed by a perineurium and a very fine bounded together by a connective tissue called epineurium. Each strand passing inward between the nerve fibers is the endoneurium. OBSERVATIONS: 1. Draw and label the parts of the nerve fibers. fiber from a nerve cell.arrow_forwardVision. Recall that muscarinic ACh receptors are located on smooth muscle tissue. The iris is composed of smooth muscle and is responsible for dilation and constriction of the pupil. Tropicamide is a medication applied to the eye during an eye exam. If Tropicamide is an antagonist to the muscarinic receptors, what effect will this have on the eye? Why do you have difficulty seeing well while you wait for the effects of this medicine to wear off?arrow_forwardPlease ASAP. Thanku. Question 15 If Na+ channels are blocked by lidocaine (sodium channel blocker), what happens to the equilibrium potential for Na+? Becomes more positive Becomes more negative Does not changearrow_forward
- molecular components not cellular.Answer carefully. Question: In terms of nerve action, describe 4 different molecular components involved. And for each, give a defect that would block nerve function.arrow_forwardTrue or false. The different subunits that a muscatinic acetylcholine receptor is made of determines the properties of the receptor such as what ion it conducts. If false what is determines the properties ?arrow_forwardPart H - Putting the Events of the Action Potential into the Correct Sequential Order Drag and drop the following steps associated with the action potential in the correct sequential order. Rank the steps from first to last.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Human Anatomy & Physiology (11th Edition)BiologyISBN:9780134580999Author:Elaine N. Marieb, Katja N. HoehnPublisher:PEARSON
Biology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStax
Anatomy & PhysiologyBiologyISBN:9781259398629Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa StouterPublisher:Mcgraw Hill Education,
Molecular Biology of the Cell (Sixth Edition)BiologyISBN:9780815344322Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter WalterPublisher:W. W. Norton & Company
Laboratory Manual For Human Anatomy & PhysiologyBiologyISBN:9781260159363Author:Martin, Terry R., Prentice-craver, CynthiaPublisher:McGraw-Hill Publishing Co.
Inquiry Into Life (16th Edition)BiologyISBN:9781260231700Author:Sylvia S. Mader, Michael WindelspechtPublisher:McGraw Hill Education
Human Anatomy & Physiology (11th Edition)
Biology
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:PEARSON
Biology 2e
Biology
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:OpenStax
Anatomy & Physiology
Biology
ISBN:9781259398629
Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter
Publisher:Mcgraw Hill Education,
Molecular Biology of the Cell (Sixth Edition)
Biology
ISBN:9780815344322
Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter Walter
Publisher:W. W. Norton & Company
Laboratory Manual For Human Anatomy & Physiology
Biology
ISBN:9781260159363
Author:Martin, Terry R., Prentice-craver, Cynthia
Publisher:McGraw-Hill Publishing Co.
Inquiry Into Life (16th Edition)
Biology
ISBN:9781260231700
Author:Sylvia S. Mader, Michael Windelspecht
Publisher:McGraw Hill Education
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