Laboratory Manual For Human Anatomy & Physiology
4th Edition
ISBN: 9781260159363
Author: Martin, Terry R., Prentice-craver, Cynthia
Publisher: McGraw-Hill Publishing Co.
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Textbook Question
Chapter 29, Problem 2.1A
A withdrawal reflex employs _______________________ in conjunction with sensory and motor neurons.
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Effectors of a reflex arc are glands and _______________________.
Reflexes are often used for diagnosing disorders of the nervous system and locating injured tissues in the body. Describe 2 somatic reflexes and explain the reason why these reflexes can cease to function or function abnormally.
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A knee-jerk reflex employs only _______________________ and motor neurons.
Chapter 29 Solutions
Laboratory Manual For Human Anatomy & Physiology
Ch. 29 - The impulse over a motor neuron will lead to a. an...Ch. 29 - Stretch reflex receptors are called a. effectors....Ch. 29 - Stretch reflexes include ail of the following...Ch. 29 - Prob. 4PLCh. 29 - Prob. 5PLCh. 29 - The quadriceps femoris is the effector muscle of...Ch. 29 - The posterior roots of spinal nerves contain the...Ch. 29 - The normal patellar reflex response involves...Ch. 29 - A withdrawal reflex employs...Ch. 29 - Interneurons in a withdrawal reflex are located in...
Ch. 29 - A reflex arc begins with the stimulation of a...Ch. 29 - Effectors of somatic reflex arcs are...Ch. 29 - Prob. 2.5ACh. 29 - The effector muscle of the patellar reflex is the...Ch. 29 - The sensory stretch receptors (muscle spindles) of...Ch. 29 - The posterior root of a spinal nerve contains the...Ch. 29 - The normal plantar reflex results in...Ch. 29 - Stroking the sole of the foot in infants results...Ch. 29 - In a stretch reflex arc, when the agonist muscle...Ch. 29 - Synapses, whether excitatory or inhibitory, occur...Ch. 29 - Prob. 2.13ACh. 29 - Prob. 2.14A
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- Fill in the blank: A withdrawal reflex employs a total of _______________________ neurons.arrow_forwardDefine reflex arcarrow_forwardAnswer the following for each reflex Reflex Expected Response Nerve Being Tested • Patellar reflex ________________________ ____________________ • Achilles tendon reflex ________________________ ____________________ • Plantar reflex (for adult) ________________________ ____________________ • Biceps tendon reflex ________________________ ____________________ • Consensual light reflex ________________________ ____________________ • Ciliospinal reflex ________________________ ____________________arrow_forward
- Preganglionic fibers of parasympathetic nerves synapse on neurons located within ________ gangliaarrow_forwardFor the reflex arc in Figure, name the: ______________________ 1. Nerve carrying motor information causing right leg flexion ______________________ 2. Nerve carrying motor information causing left leg extension ______________________ 3. Agonistic muscles for right leg flexion ______________________ 4. Agonistic muscles for left leg extensionarrow_forwardWhy must the withdrawal reflex, but not the stretch reflex, involve a polysynaptic reflex arc?arrow_forward
- Bell’s Palsy affects the facial nerve and most often presents with motor symptoms only. Yet the facial nerve is a mixed sensory nerve; suggest possible reasons for this anomaly.arrow_forwardLabel the patellar reflex arc and reciprocal innervation in Figure .arrow_forwardWhy is the crossed extensor reflex classified as a contralateral reflex arc?arrow_forward
- Reflex Arc Using the terms provided, label the following illustration of a reflex arc. Dendrite Cell Body Interneuron Gray matter Sensory neuron axon Synapse White matter Spinal nerve Motor neuron axon 3 2 From receptor 8. To skeletal muscle effector 5 Spinal cord 6.arrow_forwardNerves from the left side of the brainare mostly linked to the ______________side of the body, and vice versa.arrow_forwardExplain why the crossed extension reflex must accompany a withdrawal reflex of the leg.arrow_forward
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