Human Physiology: An Integrated Approach (8th Edition)
8th Edition
ISBN: 9780134605197
Author: Dee Unglaub Silverthorn
Publisher: PEARSON
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Textbook Question
Chapter 13.3, Problem 4CC
Draw a reflex map of the flexion reflex initiated by a painful stimulus to the sole of a foot.
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Why is an interneuron needed to provide reciprocal inhibition of the flexor muscle when an extensor muscle is activated?
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Chapter 13 Solutions
Human Physiology: An Integrated Approach (8th Edition)
Ch. 13.2 - List the general steps of a reflex pathway,...Ch. 13.2 - If a cell hyperpolarizes, does its membrane...Ch. 13.3 - Prob. 3CCCh. 13.3 - Draw a reflex map of the flexion reflex initiated...Ch. 13.3 - Prob. 5CCCh. 13.3 - Prob. 6CCCh. 13.3 - Prob. 7CCCh. 13 - Prob. 1RQCh. 13 - Prob. 2RQCh. 13 - The pathway pattern that brings information from...
Ch. 13 - When the axon terminal of a modulatory neuron...Ch. 13 - Autonomic reflexes are also called _____ reflexes....Ch. 13 - Prob. 6RQCh. 13 - Prob. 7RQCh. 13 - Prob. 8RQCh. 13 - Prob. 9RQCh. 13 - Prob. 10RQCh. 13 - Prob. 11RQCh. 13 - Prob. 12RQCh. 13 - Prob. 13RQCh. 13 - Prob. 14RQCh. 13 - Prob. 15RQCh. 13 - Prob. 16RQCh. 13 - Prob. 17RQCh. 13 - At your last physical, your physician checked your...Ch. 13 - There are several theories about how presynaptic...Ch. 13 - Prob. 20RQCh. 13 - Prob. 21RQCh. 13 - Prob. 22RQ
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- explain the role played by the stretch reflex around the ankle joint in maintaining the balance of a ballet dancer standing on points.arrow_forwardWhat might happen if you could suddenly stimulate gamma motor neurons to leg flexor muscles in a resting position?arrow_forwardDraw a muscle spindle surrounded by a few extrafusal fibers. Indicate the location of primary and secondary sensory endings and explain how these endings respond to musclestretch.arrow_forward
- Where are the lower motor neuron cell bodies that innervate the medial rectus muscle located? Abducens nucleus Oculomotor nucleus Facial nucleus Trochlear nucleusarrow_forwarda) Describe how the isolated muscle behaved as the stimulus interval was further decreased. b) What is tetanus? Explain the mechanism behind this phenomenon. c) At which stimulus interval did you observe tetanus? What frequency of stimulation does that correspond to?arrow_forwardExplain why α‒γ coactivation is important for quality control of voluntary motions.arrow_forward
- Describe all of the events that occur from the time the patellar tendon is struck with a mallet to the time the leg kicks.arrow_forwardA tap on the patellar tendon at the knee joint is used to test the knee-jerk reflex. All of the followings are correct, except ---------------------. The reflex starts with the 1a sensory neurons of the muscle spindle There is an excitatory stimulus to the motor pool of the extensor muscle There is a stimulation of the excitatory interneuron of the flexor muscle Excitation of the extensor muscle fibers causes the knee extension Muscle contraction depends on coordination between motor pools of antagonistic musclesarrow_forwardWhat is the correlation of the motor end plate with the skeletal muscles? Explain.arrow_forward
- In flexor withdrawal reflexes contraction of flexor muscles is associated with reciprocal inhibition of :-a- synergistic flexor musclesb- contralateral extensor musclesc- ipsilateral extensor musclesd- both ‘a’ and ‘b’ are correctarrow_forwardExplain how skeletal muscle movement is controlled in the knee-jerk reflex (only on local level).arrow_forwardExaggeration of tendon jerks could result from any of the following conditions, except :-a- lesions of supraspinal facilitatory centersb- lesions of supraspinal inhibitory centersc- increased γ-motor neuron discharged- anxietyarrow_forward
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