Human Anatomy & Physiology
1st Edition
ISBN: 9780805382952
Author: Erin C. Amerman
Publisher: PEARSON
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Question
Chapter 11.3, Problem 9QC
Summary Introduction
To review:
The local potentials and the reason behind calling it graded potential.
Introduction:
An action potential is a response observed as a temporary reversal in the membrane potential of a muscle fiber. This is observed when a stimulus from the motor neuron is received. In some cases, when the neuron is stimulated only once, a full action potential is not generated.
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Chapter 11 Solutions
Human Anatomy & Physiology
Ch. 11.1 - What are the organs of the CNS?Ch. 11.1 - Prob. 2QCCh. 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. 6QCCh. 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. 10QCCh. 11.3 - 1. What is the resting membrane potential?
Ch. 11.3 - Prob. 2QCCh. 11.3 - What two factors generate the resting membrane...Ch. 11.3 - Prob. 4QCCh. 11.3 - Prob. 5QCCh. 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. 8QCCh. 11.3 - Prob. 9QCCh. 11.3 - Prob. 10QCCh. 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. 18QCCh. 11.4 - What are three locations where presynaptic axons...Ch. 11.4 - Define synaptic transmission.Ch. 11.4 - Prob. 3QCCh. 11.4 - Prob. 4QCCh. 11.4 - Prob. 5QCCh. 11.4 - Prob. 6QCCh. 11.4 - Prob. 7QCCh. 11.5 - Prob. 1QCCh. 11.5 - Prob. 2QCCh. 11.5 - Prob. 3QCCh. 11.5 - Prob. 4QCCh. 11.5 - Prob. 5QCCh. 11.6 - 1. Why are neurons organized into neuronal...Ch. 11.6 - Prob. 2QCCh. 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. 4CYRCh. 11 - Prob. 5CYRCh. 11 - Prob. 6CYRCh. 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. 2CYUCh. 11 - What conditions must be met for an axon to...Ch. 11 - 4. Explain how an action potential is propagated...Ch. 11 - Prob. 1AYKACh. 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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- What is a graded potential? Where does a graded potential start in a neuron? Do graded potentials always result in an action potential? Are all graded potentials depolarizing? Why or why not? Where are action potentials started in a neuron and what is the threshold potential to do so in a neuron?arrow_forwardDescribe in detail the function for three type of potentials seen in neurons and describe in detail the three types of potentials seen in neurons?arrow_forwardExplain the difference between different types of graded potential‘sarrow_forward
- In the figure to the left, name the 4 phases of the action potential (Note: you have to write in where phase 4 occurs). Describe what happens in each phase with a focus on Na+ and K+ flow through channels and the membrane potential. Discuss the importance of threshold. How does this relate to the concept of APs being all or none?arrow_forwardList the characteristics of a local potential versus an action potentials. Describe where each happens and what type of gates are involved and what is achievedarrow_forwardAction potentials are “all or none.” Discuss this statement with reference to specific types of channels (60%). Explain what determines the frequency of action potentials (40%).arrow_forward
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