21. During the generation of an action potential in a nerve cell axon, the depolarization of the membrane is caused by:T + a) opening of potassium channels in the axonal membraneT + b) opening of sodium channels in the axonal membrane T + c) closing of potassium channels in the axonal membraneT + d) closing of sodium channels in the axonal membrane.T 22. Myelinated axons:T + 'a) have gaps in the myelin sheath, in which the membrane is exposed, called Nodes of - Ranvier. T + b) propagate impulses more rapidly that unmyelinated axons due to saltatory conduction. + c) occur in white matter of the CNST d) can be destroyed by diseases such as multiple sclerosis (MS) and amvlotrophic lateral sclerosis (Lou Gehrig's disease) T + e) All of the above (a, b, c and d) are correct. T
21. During the generation of an action potential in a nerve cell axon, the depolarization of the membrane is caused by:T + a) opening of potassium channels in the axonal membraneT + b) opening of sodium channels in the axonal membrane T + c) closing of potassium channels in the axonal membraneT + d) closing of sodium channels in the axonal membrane.T 22. Myelinated axons:T + 'a) have gaps in the myelin sheath, in which the membrane is exposed, called Nodes of - Ranvier. T + b) propagate impulses more rapidly that unmyelinated axons due to saltatory conduction. + c) occur in white matter of the CNST d) can be destroyed by diseases such as multiple sclerosis (MS) and amvlotrophic lateral sclerosis (Lou Gehrig's disease) T + e) All of the above (a, b, c and d) are correct. T
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,...
Related questions
Question
please answer 21,22

Transcribed Image Text:21. During the generation of an action potential in a nerve cell axon, the depolarization of the
membrane is caused by:T
+ a) opening of potassium channels in the axonal membraneT
+ b) opening of sodium channels in the axonal membraneT
+ c) closing of potassium channels in the axonal membraneT
+ d) closing of sodium channels in the axonal membrane. T
22. Myelinated axons:
+ 'a) have gaps in the myelin sheath, in which the membrane is exposed, called Nodes of -
Ranvier. T
+ b) propagate impulses more rapidly that unmyelinated axons due to saltatory conduction. T
+ c) occur in white matter of the CNST
+ d) can be destroyed by diseases such as multiple sclerosis (MS) and amvlotrophic lateral
sclerosis (Lou Gehrig's disease) T
+ e) All of the above (a, b, c and d) are correct. T
Expert Solution

This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 3 steps with 1 images

Recommended textbooks for you

Human Anatomy & Physiology (11th Edition)
Anatomy and Physiology
ISBN:
9780134580999
Author:
Elaine N. Marieb, Katja N. Hoehn
Publisher:
PEARSON

Anatomy & Physiology
Anatomy and Physiology
ISBN:
9781259398629
Author:
McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter
Publisher:
Mcgraw Hill Education,

Human Anatomy
Anatomy and Physiology
ISBN:
9780135168059
Author:
Marieb, Elaine Nicpon, Brady, Patricia, Mallatt, Jon
Publisher:
Pearson Education, Inc.,

Human Anatomy & Physiology (11th Edition)
Anatomy and Physiology
ISBN:
9780134580999
Author:
Elaine N. Marieb, Katja N. Hoehn
Publisher:
PEARSON

Anatomy & Physiology
Anatomy and Physiology
ISBN:
9781259398629
Author:
McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter
Publisher:
Mcgraw Hill Education,

Human Anatomy
Anatomy and Physiology
ISBN:
9780135168059
Author:
Marieb, Elaine Nicpon, Brady, Patricia, Mallatt, Jon
Publisher:
Pearson Education, Inc.,

Anatomy & Physiology: An Integrative Approach
Anatomy and Physiology
ISBN:
9780078024283
Author:
Michael McKinley Dr., Valerie O'Loughlin, Theresa Bidle
Publisher:
McGraw-Hill Education

Human Anatomy & Physiology (Marieb, Human Anatomy…
Anatomy and Physiology
ISBN:
9780321927040
Author:
Elaine N. Marieb, Katja Hoehn
Publisher:
PEARSON