Explanation There are various factors that affect the speed of conduction. These include the diameter of the axon and the myelin sheath around the axon. Based on the presence or absence of myelin sheath, the conduction across an axon can be of two types as given below: Saltatory conduction Continuous conduction The type of conduction in which the myelin sheath is present around axon is termed as the saltatory conduction. The conduction in which the myelin sheath is absent around axons is termed as the continuous conduction. The speed of conduction is significantly faster. It is slower, as the action potential propagates through each point of the axon, thus, resulting in a slow speed...

Human Anatomy & Physiology, Modified Mastering A&P with eText and Value Pack Access Card and Practicing A&P Workbook for Human Anatomy & Physiology

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ISBN: 9780134206189

Author: Erin C. Amerman

Publisher: PEARSON

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Question

Chapter 11.3, Problem 18QC

Summary Introduction

To review:

The difference between saltatory and continuous conductions. Also, the reason behind the fast speed of one of these mechanisms.

Introduction:

The action potential generated at the trigger zone is propagatedalong the whole axon. The propagation of these potentials is unidirectional. The rate of propagation down the axon is called conduction speed. The conduction speed determines theextent of rapid responses that can occur within the system.

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Chapter 11.3, Problem 17QC

Chapter 11.4, Problem 1QC

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Chapter 11 Solutions

Human Anatomy & Physiology, Modified Mastering A&P with eText and Value Pack Access Card and Practicing A&P Workbook for Human Anatomy & Physiology

Ch. 11.1 - What are the organs of the CNS?Ch. 11.1 - Prob. 2QC Ch. 11.1 - Describe the sensory, integrative, and motor...Ch. 11.1 - 4. What are the differences between the somatic...Ch. 11.1 - How does the somatic motor division of the PNS...Ch. 11.2 - What are the functions of the cell body,...Ch. 11.2 - What are the structural differences between...Ch. 11.2 - What are the functional differences between...Ch. 11.2 - What are the functions of astrocytes?Ch. 11.2 - Prob. 5QC

Ch. 11.2 - Prob. 6QC Ch. 11.2 - 7. What is the function of the myelin sheath? Ch. 11.2 - How does the myelin sheath differ in the CNS and...Ch. 11.2 - Are neurons more likely to regenerate in the CNS...Ch. 11.2 - Prob. 10QC Ch. 11.3 - 1. What is the resting membrane potential? Ch. 11.3 - Prob. 2QC Ch. 11.3 - What two factors generate the resting membrane...Ch. 11.3 - Prob. 4QC Ch. 11.3 - Prob. 5QC Ch. 11.3 - In and around the axon, where is the higher...Ch. 11.3 - What is the resting membrane potential, and what...Ch. 11.3 - Prob. 8QC Ch. 11.3 - Prob. 9QC Ch. 11.3 - Prob. 10QC Ch. 11.3 - What takes place during the depolarization phase...Ch. 11.3 - 7. What must be reached in order for...Ch. 11.3 - 8. What takes place during the repolarization and...Ch. 11.3 - 9. What are the absolute and relative refractory...Ch. 11.3 - 10. How do local potentials and action potentials...Ch. 11.3 - Which is useful for long-distance signaling, and...Ch. 11.3 - 12. How is an action potential propagated down an...Ch. 11.3 - Prob. 18QC Ch. 11.4 - What are three locations where presynaptic axons...Ch. 11.4 - Define synaptic transmission.Ch. 11.4 - Prob. 3QC Ch. 11.4 - Prob. 4QC Ch. 11.4 - Prob. 5QC Ch. 11.4 - Prob. 6QC Ch. 11.4 - Prob. 7QC Ch. 11.5 - Prob. 1QC Ch. 11.5 - Prob. 2QC Ch. 11.5 - Prob. 3QC Ch. 11.5 - Prob. 4QC Ch. 11.5 - Prob. 5QC Ch. 11.6 - 1. Why are neurons organized into neuronal...Ch. 11.6 - Prob. 2QC Ch. 11.6 - 3. What mechanisms stabilize neural circuits? Ch. 11 - Which of the following statements about the...Ch. 11 - 2. Regulation of heart rate, blood pressure, and...Ch. 11 - Match each type of neuroglial cell with its...Ch. 11 - Prob. 4CYR Ch. 11 - Prob. 5CYR Ch. 11 - Prob. 6CYR Ch. 11 - 7. Fill in the blanks: The _______is the period of...Ch. 11 - With respect to the condition of action...Ch. 11 - 9. Identify the following as properties of...Ch. 11 - The trigger for exocytosis of synaptic vesicles...Ch. 11 - Match the following neurotransmitters with their...Ch. 11 - 12. Which of the following is not a method by...Ch. 11 - 13. A ________is characterized by multiple input...Ch. 11 - Mark the following statements as true or false. If...Ch. 11 - 15. Mark the following statements as true or...Ch. 11 - Sequence the following list of events of a...Ch. 11 - 16. Mark the following statements as true or...Ch. 11 - 1. A drug that blocks channels in neurons does so...Ch. 11 - Prob. 2CYU Ch. 11 - What conditions must be met for an axon to...Ch. 11 - 4. Explain how an action potential is propagated...Ch. 11 - Prob. 1AYKA Ch. 11 - 2. During a surgical procedure, an...Ch. 11 - Albert accidentally ingests the poison...Ch. 11 - 4. Albert, the patient in question 3, takes the...Ch. 11 - Predict the effect that tetrodotoxin would have on...Ch. 11 - Explain what would happen if depolarization of the...

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Solution Summary: The author explains the difference between saltatory and continuous conductions and the reason behind the fast speed of one of these mechanisms.

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