Biology
12th Edition
ISBN: 9780134813448
Author: Audesirk, Teresa, Gerald, Byers, Bruce E.
Publisher: Pearson,
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Textbook Question
Chapter 39, Problem 3RQ
What are the four elements of a neuronal pathway, beginning with a sensory neuron and ending with a muscle? Describe how these elements function in the human pain-withdrawal reflex.
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Which of the following statements regarding the motor end plate in the somatic motor division of the nervous system is true?
After the activation of voltage-gated calcium channels, the neuron releases ACh onto the muscarinic receptors on the surface of the highly folded area of the muscle fibre.
The preganglionic nerve fibre releases ACh onto the postganglionic nerve fibre, which then releases ACh onto the cholinergic receptors of the motor end plate.
Chemically gated monovalent cation channels on the motor end plate are activated once the motor neuron releases ACh onto the nicotinic receptors on the surface of the muscle cell.
The AChE enzyme enhances the amount of ACh released into the neuromuscular junction
You are a famous researcher working in your lab. You isolate a piece of muscle (call it Muscle A) and examine its innervations. You find a short preganglionic neuron synapsing onto a long postganglionic neuron, which synapses onto the muscle. Then you examine Muscle B and find a single neuron innervating it. you instantly recognize what types of neuronal connections you will find on both Muscle A and Muscle B. First give 2 characteristics of the synapse onto Muscle A. Then give 2 ways in which the synapse of Muscle B will be different.
Put the following events in chronological order. (Some of the steps may be missing.)1) Ca*+ floods into the pre-synaptic neuron.2) ch (Acetylcholine) binds to ACh receptors in the sarcolemma.3) Na+ floods into the post-synaptic muscle cell.4) The A.P arrives at the pre-synaptic terminal causing Ca+ channels to open.5) Ach from the synaptic vesicles spills into the pre-synaptic cleft.6) A post-synaptic action potential results in the muscle fiber (depolarization
Chapter 39 Solutions
Biology
Ch. 39.1 - describe the structure of a typical neuron?Ch. 39.1 - Prob. 2CYLCh. 39.2 - Prob. 1TCCh. 39.2 - Prob. 1CSCCh. 39.2 - Prob. 1CYLCh. 39.2 - explain how an action potential in a presynaptic...Ch. 39.2 - Prob. 3CYLCh. 39.3 - Prob. 1TCCh. 39.3 - Prob. 1CYLCh. 39.3 - Prob. 2CYL
Ch. 39.3 - explain how the brain determines which muscles to...Ch. 39.4 - describe the anatomy of diffuse and centralized...Ch. 39.5 - John comes to the emergency room with neither...Ch. 39.5 - Prob. 1CSCCh. 39.5 - Prob. 2TCCh. 39.5 - Prob. 1CTCh. 39.5 - Prob. 1HYEWCh. 39.5 - distinguish between the central and peripheral...Ch. 39.5 - Prob. 2CYLCh. 39.5 - label diagrams of the human brain and spinal cord,...Ch. 39.5 - Prob. 4CYLCh. 39.5 - Prob. 5CYLCh. 39.5 - Prob. 2CTCh. 39 - Prob. 1MCCh. 39 - Neurotransmitters are typically released by a a....Ch. 39 - Automatic bodily functions such as breathing and...Ch. 39 - Prob. 4MCCh. 39 - Prob. 5MCCh. 39 - Prob. 1FIBCh. 39 - Prob. 2FIBCh. 39 - Prob. 3FIBCh. 39 - Prob. 4FIBCh. 39 - Prob. 5FIBCh. 39 - Prob. 6FIBCh. 39 - Prob. 1RQCh. 39 - Prob. 2RQCh. 39 - What are the four elements of a neuronal pathway,...Ch. 39 - Prob. 4RQCh. 39 - Prob. 5RQCh. 39 - Prob. 6RQCh. 39 - Explain the differences between short-term memory...Ch. 39 - Prob. 1ACCh. 39 - Prob. 2AC
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