Biology: Life on Earth with Physiology Plus Mastering Biology with Pearson eText -- Access Card Package (11th Edition)
11th Edition
ISBN: 9780133910605
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
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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Consider three alpha-motor neurons of different sizes: small, medium and large. All three neurons receive input from the same
excitatory interneuron. When the interneuron fires action potentials at low frequency, only one alpha motor neuron fires action
potentials. As the action potential frequency of the interneuron increases, two alpha-motor neurons are recruited, and at
maximum frequency, all three are recruited. In what order would the three alpha-motor neurons have been recruited?
Large first, then medium, then small.
Small first, then medium, then large.
Medium first, then small, then large.
Medium first, then large, then small.
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: Life on Earth with Physiology Plus Mastering Biology with Pearson eText -- Access Card Package (11th Edition)
Ch. 39.1 - describe the structure of a typical neuron?Ch. 39.1 - Prob. 2CYLCh. 39.2 - Prob. 1TCCh. 39.2 - Prob. 1CYLCh. 39.2 - explain how an action potential in a presynaptic...Ch. 39.2 - Prob. 3CYLCh. 39.2 - Prob. 1CSCCh. 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. 2ETCh. 39.5 - At least two commercial companies, No Lie MRI and...Ch. 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. 39.5 - Prob. 1CSRCh. 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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