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 3PL
Stretch reflexes include ail of the following except the ___________ reflex.
a. withdrawal
b. patellar
c. calcaneal
d. biceps
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All of the following are true concerning reflex arcs EXCEPT
A.they involve a few neurons and directly enter and immediately leave the spinal cord
B.they are used to prevent harm
C.they are subconscious and automatic
D.they only use the PNS and not the CNS
Which of these tracts carries motor signals destined for the postural muscles? a. the gracile fasciculus b. the cuneate fasciculus c. the spinothalamic tract d. the vestibulospinal tract e. the tectospinal tract
All somatic reflexes share all of the following properties except a. they are quick. b. they are monosynaptic. c. they require stimulation. d. they are involuntary. e. they are stereotyped.
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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- Which of these events occurs when a person steps on a tack with theright foot?a. The right foot is pulled away from the tack because of the Golgitendon reflex.b. The left leg is extended to support the body because of the stretchreflex.c. The flexor muscles of the right thigh contract, and the extensormuscles of the right thigh relax because of reciprocal innervation.d. Extensor muscles contract in both thighs because of the crossedextensor reflexarrow_forwardA functional reflex requires a. only a sensory neuron and a motor neuron. b. a sensory neuron, the thalamus, and a motor neuron. c. the cerebral cortex and a motor neuron. d. only the cerebral cortex and the thalamus.arrow_forwardDistinguish between the following types of reflexes: A) Somatic vs. Visceral (autonomic) reflex B) Monosynaptic vs. Polysynaptic reflex C) Ipsilateral vs. Contralateral vs. Bilateral (consensual) reflex D) Cranial vs. Spinal reflexarrow_forward
- The superior colliculi are twin bodies within the corpora quadrigemina of the midbrain that are involved in a. visual reflexes. b. auditory reflexes. c. relaying of cutaneous information. d. release of pituitary hormones.arrow_forwardWhich statement is correct about reflexes? a. The patellar reflex tests the S1–S3 spinal nerve segments. b. A hypoactive reflex may indicate damage to the neuromuscular junction. c. The more hyperactive the reflex, the healthier the individual. d. A normal biceps reflex response is extension of the elbow when the biceps tendon is tapped.arrow_forwardThe _____________ nerve innervates the anterior thigh muscles and the skin on the anterior thigh. a. femoral c. sciatic b. obturator d. tibialarrow_forward
- A flexor withdrawal reflex shows all the following properties, except :-a- recruitmentb- prepotent c- non-fatigable d- irradiationarrow_forwardDescartes' version of the reflex arc was important for understanding the brain's role in sensation, perception and reactivity. Which feature of Descartes' reflex arc is comparable to neurotransmission through motor, inter, and sensory neurons in the present day reflex circuit? A) body activity B) External stimulus C) Valvules Opening D) Nerve stimulationarrow_forwardSuppose a person has spinal cord damage at the cervical level. would this stop the knee-jerk reflex? How would it affect the plantar reflex? Explainarrow_forward
- A spinal reflex requires the participation of each of the following except:a. cerebral cortexb. sensory neuronc. interneurond. motor neuronarrow_forwardThe largest nerve in the body, the sciatic nerve, belongs to the ________ nerve plexus. Question options: A) sacral B) lumbar C) brachial D) cervicalarrow_forwardAfter injuring his back lifting a sofa, Tom exhibits a positive Babinski reflex. What does this imply about Tom’s injury?arrow_forward
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