ANAT & PHYS CONNECT ACCESS>I<
8th Edition
ISBN: 9781260278330
Author: SALADIN
Publisher: MCG
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Chapter 13, Problem 2TYC
Wallace is the victim of a hunting accident. A bullet grazed his vertebral column, and bone fragments severed the left half of his spinal cord at segments T8 through T10. Since the accident, Wallace has had a condition called dissociated sensory loss, in which he feels no sensations of deep touch or limb position on the left side of his body below the injury, and no sensations of pain 01 heat from the right side Explain what spinal tract(s) the injury has affected and why these sensory losses are on opposite sides of the body.
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Wallace is the victim of a hunting accident. A bullet grazed his vertebral column, and bone fragments severed the left half of his spinal cord at segments T8 through T10. Since the accident, Wallace has had a conditioncalled dissociated sensory loss, in which he feels no sensations of deep touch or limb position on the left side of his body below the injury, and no sensations of pain or heat from the right side. Explain what spinal tract(s) the injury has affected and why these sensory losses are on opposite sides of the body.
Bill and Mary were involved in an accident, and each experienced lossof proprioception, fine touch, and vibration on the left side of the bodybelow the waist. Physicians determined by magnetic resonance imaging(MRI) that Bill had damage to his spinal cord and that Mary had damageto her brainstem. Explain which side of the spinal cord was damaged inBill and which side of the brainstem was damaged in Mary
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
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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- API John was struck in the left side of his face with a baseball while batting. He was not wearing a helmet and he fractured his zygomatic arch and parts of his temporal bone. After he had reconstructive surgery he noticed his left lower eyelid was still drooping and the corner of his mouth was sagging. What nerve was damaged and what other issues could damage to this nerve cause?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_forwardWhen a patient flexes their neck, the head tips to the right side. Also, their tongue sticks out slightly to the left when they try to stick it straight out. Where is the damage to the brain stem most likely located? Are any of the cranial nerves involved? If so, which ones?arrow_forward
- Which of the following is the least likely to relate to the cervical plexus? A:Median nerve B:Nerves for neck muscles C:Nerves for shoulder muscles D:Phrenic nervearrow_forwardWatch this video (http://openstaxcollege.org/l/graymatter) to learn about the gray matter of the spinalcord that receives input from fibers of the dorsal (posterior)root and sends information out through the fibers of theventral (anterior) root. As discussed in this video, theseconnections represent the interactions of the CNS withperipheral structures for both sensory and motor functions.The cervical and lumbar spinal cords have enlargements asa result of larger populations of neurons. What are theseenlargements responsible for?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_forward
- Which nerve might you have damaged if you have difficulty abducting your arm and have anesthesia (lack of sensation) along the superolateral arm?arrow_forwardTraumatic damage to the spinal cord is common. Based on the information in Figure 2 and Table 2, is it possible that an entire column of white matter could be damaged without causing any problems with movement? Explain your answer carefully and thoroughly.arrow_forwardWhich of the following is part of the hindbrain Question 9 options: A) Pons B) Tectum C) Tegmentum D) Thalamus E) Cerebrumarrow_forward
- After suffering a stroke, a patient can see objects anywherein front of him but pays attention only to objects in his rightfield of vision. When asked to describe these objects, he hasdifficulty judging their size and distance. What part of thebrain was likely damaged by the stroke?(A) the left frontal lobe(B) the right frontal lobe(C) the right parietal lobe(D) the corpus callosumarrow_forwardWhich of the following carries pain information to the brain from the spinal cord? Question 7 options: A) Ventral horn of gray matter B) Ventral corticospinal tract C) Spinocerebellar tract D) Lateral corticospinal tract E) Lateroventral spinothalmic tractarrow_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
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