ANAT & PHYS CONNECT ACCESS>I<
8th Edition
ISBN: 9781260278330
Author: SALADIN
Publisher: MCG
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Chapter 13, Problem 7TYR
Summary Introduction
Introduction:
Spinal cord is a collection of nerve tissues that arise from the brain stem. It is a site which contains many motor neurons, interneurons and complex neural circuits. It is often known as ‘nuts and bolts’ of the nervous system. It controls and enables the forces on muscles and its adaptive movements.
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In the spinal cord, the somas of the lower motor neurons are found ina. the cauda equina.b. the posterior horns.c. the anterior horns.d. the posterior root ganglia.e. the fasciculi
The thoracic spinal cord has the smallest dorsal horn area because:
a.
the trunk is the most innervated area of the body and therefore there are more projections into the dorsal horn there.
b.
the trunk is the least innervated area of the body and therefore there are fewer projections into the dorsal horn there.
c.
most of the descending upper motor neurons have already entered the ventral horn.
d.
There are many motor neurons to control the small muscles around the spine.
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
Chapter 13 Solutions
ANAT & PHYS CONNECT ACCESS>I<
Ch. 13.1 - Prob. 1AYLOCh. 13.1 - Prob. 2AYLOCh. 13.1 - Prob. 3AYLOCh. 13.1 - Prob. 4AYLOCh. 13.1 - Prob. 5AYLOCh. 13.1 - Prob. 6AYLOCh. 13.1 - Prob. 7AYLOCh. 13.1 - Prob. 8AYLOCh. 13.1 - The position of the posterior and anterior horns...Ch. 13.1 - Prob. 10AYLO
Ch. 13.1 - Prob. 11AYLOCh. 13.1 - Prob. 12AYLOCh. 13.1 - Names and functions of the descending tractsCh. 13.1 - Prob. 14AYLOCh. 13.1 - Prob. 15AYLOCh. 13.1 - Prob. 16AYLOCh. 13.1 - Prob. 1BYGOCh. 13.1 - Prob. 2BYGOCh. 13.1 - Prob. 3BYGOCh. 13.1 - Prob. 4BYGOCh. 13.1 - Prob. 5BYGOCh. 13.2 - Prob. 1AYLOCh. 13.2 - Prob. 2AYLOCh. 13.2 - Prob. 3AYLOCh. 13.2 - Prob. 4AYLOCh. 13.2 - Prob. 5AYLOCh. 13.2 - Prob. 6AYLOCh. 13.2 - Prob. 7AYLOCh. 13.2 - Prob. 8AYLOCh. 13.2 - Prob. 9AYLOCh. 13.2 - Prob. 10AYLOCh. 13.2 - Prob. 11AYLOCh. 13.2 - Prob. 12AYLOCh. 13.2 - Prob. 6BYGOCh. 13.2 - Prob. 7BYGOCh. 13.2 - Prob. 8BYGOCh. 13.2 - Prob. 9BYGOCh. 13.3 - Prob. 1AYLOCh. 13.3 - The pathway and constituents of a somatic reflex...Ch. 13.3 - Prob. 3AYLOCh. 13.3 - Structure and function of muscle spindlesCh. 13.3 - Stretch reflexes; one or more examples; the...Ch. 13.3 - Prob. 6AYLOCh. 13.3 - Prob. 7AYLOCh. 13.3 - Prob. 8AYLOCh. 13.3 - Prob. 9AYLOCh. 13.3 - Name five structural components of a typical...Ch. 13.3 - State the function of each of the following in a...Ch. 13.3 - Prob. 12BYGOCh. 13.3 - Prob. 13BYGOCh. 13.3 - Prob. 14BYGOCh. 13 - arachno-Ch. 13 - Prob. 2BYMVCh. 13 - Prob. 3BYMVCh. 13 - Prob. 4BYMVCh. 13 - Prob. 5BYMVCh. 13 - Prob. 6BYMVCh. 13 - Prob. 7BYMVCh. 13 - Prob. 8BYMVCh. 13 - Prob. 9BYMVCh. 13 - tecto-Ch. 13 - Below L2. the vertebral canal is occupied by a...Ch. 13 - Prob. 2TYRCh. 13 - Nerve fibers that adjust the tension in a muscle...Ch. 13 - A stretch reflex requires the action of _______ to...Ch. 13 - Prob. 5TYRCh. 13 - Prob. 6TYRCh. 13 - Prob. 7TYRCh. 13 - Prob. 8TYRCh. 13 - Prob. 9TYRCh. 13 - Prob. 10TYRCh. 13 - Prob. 11TYRCh. 13 - Prob. 12TYRCh. 13 - The cerebellum receives feedback from the muscles...Ch. 13 - In the ______ reflex, contraction of flexor...Ch. 13 - Prob. 15TYRCh. 13 - Prob. 16TYRCh. 13 - Prob. 17TYRCh. 13 - Prob. 18TYRCh. 13 - Prob. 19TYRCh. 13 - Prob. 20TYRCh. 13 - Prob. 1WWTSCh. 13 - Prob. 2WWTSCh. 13 - Prob. 3WWTSCh. 13 - Some spinal nerves are sensory and others are...Ch. 13 - Prob. 5WWTSCh. 13 - The anterior and posterior horns of the spinal...Ch. 13 - Prob. 7WWTSCh. 13 - Prob. 8WWTSCh. 13 - Prob. 9WWTSCh. 13 - Prob. 10WWTSCh. 13 - Jillian is thrown from a horse. She strikes the...Ch. 13 - Wallace is the victim of a hunting accident. A...Ch. 13 - Anthony gets into a fight between rival gangs As...Ch. 13 - Stand with your right shoulder, hip, and foot...Ch. 13 - When a patient needs a tendon graft, surgeons...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Julio D., who had recently retired, was enjoying an afternoon of playing golf when suddenly he experienced a severe headache and dizziness. These symptoms were quickly followed by numbness and partial paralysis on the tipper right side of his body, accompanied by an inability to speak. After being rushed to the emergency room, Julio was diagnosed as having suffered a stroke. Given the observed neurological impairment, what areas of his brain were affected?arrow_forwardThe vertebral canal is occupied by a bundle of spinal nerve roots called a. the terminal filum. b.Below L2 the descending tracts. c. the gracile fasciculus. d. the medullary cone. e. the cauda equina.arrow_forwardThe cranial motor nuclei which receive innervation only from the contralateral corticobulbar tract are :-a- nuclei of the trigeminal and vagus nervesb- nuclei of the vagus and glossopharyngeal nervesc- nuclei of the facial and hypoglossal nervesd- nuclei of the facial and glossopharyngeal nervesarrow_forward
- Would autonomic functions be affected if the anterior roots of the cervical spinal nerves were damaged? Why or why not?arrow_forwardDescribe the spinal cord according to: A. location B. shape and length C. vertebral levels of upper and lower extremities D. distribution of gray and white matter E. anatomical enlargements F. features at distal end G. attachment of spinal nervesarrow_forwardSelect the statement that best describes the local circuitry of the spinal cord. a. There is no local circuitry within the spinal cord. b. Local circuits enable the same neurons to innervate both distal and proximal muscles. c. Neurons that innervate distal muscles are interconnected across the midline. d. None of the answers. e. Neurons that innervate proximal muscles are interconnected through many spiral cord segments.arrow_forward
- Parasympathetic ganglia are located a. in a chain parallel to the spinal cord. b. in the dorsal roots of spinal nerves. c. next to or within the organs innervated. d. in the brain.arrow_forwardEach of the following is true of the spinal cord, except: it ______________. a.carries sensory input b.carries motor output c.contains dorsal horns d.contains a central sulcus e.major reflex centerarrow_forwardThe subdivision of the brain that does not initiate somatic motor movements, but rather coordinates and fine-tunes those movements, is the a. medulla oblongata. b. cerebrum. c. cerebellum. d. diencephalon.arrow_forward
- (a) What are the superior and inferior boundaries of the spinal cord in the vertebral canal? (b) A correctly executed lumbar spinal tap could poke the cauda equina or filum terminale, but not the conus medullaris. Explain.arrow_forwardIn adults, the spinal cord is not the same length as the vertebral canal, and most of the lumbar part of the spinal cord is within A. the coccyx. B. the sacrum. C. the cervical vertebrae. D. the thoracic vertebrae. E. the cauda equina.arrow_forwardWhich of these statements about the basal nuclei is true?a. They are located in the cerebrum.b. They contain the caudate nucleus.c. They are involved in motor control.d. They are part of the extrapyramidal system.e. All of these are true.arrow_forward
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