Connect Online Access for Saladin Human Anatomy
11th Edition
ISBN: 9781260399738
Author: SALADIN, Kenneth
Publisher: Mcgraw-hill Higher Education (us)
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Question
Chapter 14, Problem 2TYC
Summary Introduction
To analyze:
The spinal tract injury and the reason for the losses on the opposite side of the body.
Introduction:
Dissociated sensory loss is neurological damage in the single tract of the spinal cord due to a lesion. The condition results in loss of proprioception, fine touch and selective loss of temperature and pain.
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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.
Two patients are admitted to the hospital. According to their charts,both have herniated disks that are placing pressure on the roots of thesciatic nerve. One patient has pain in the buttocks and the posterioraspect of the thigh. The other patient experiences pain in the posteriorand lateral aspects of the leg and the lateral part of the ankle and foot.Explain how the same condition, a herniated disk, can produce suchdifferent symptoms.
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.
Chapter 14 Solutions
Connect Online Access for Saladin Human Anatomy
Ch. 14.1 - Prob. 1AWYKCh. 14.1 - Prob. 1BYGOCh. 14.1 - Prob. 2BYGOCh. 14.1 - Prob. 3BYGOCh. 14.1 - Prob. 4BYGOCh. 14.1 - Identify each of the following spinal tracts with...Ch. 14.2 - How does the structure of a nerve compare to that...Ch. 14.2 - Prob. 6BYGOCh. 14.2 - Prob. 7BYGOCh. 14.2 - List the five plexuses of spinal nerves and state...
Ch. 14.2 - State which plexus gives rise to each of the...Ch. 14.3 - Prob. 1AWYKCh. 14.3 - Prob. 10BYGOCh. 14.3 - Prob. 11BYGOCh. 14.3 - Describe a situation in which each of the...Ch. 14.4 - Prob. 1AWYKCh. 14.4 - Prob. 13BYGOCh. 14.4 - Prob. 14BYGOCh. 14.4 - Prob. 15BYGOCh. 14 - Four functions of the spinal cord and their...Ch. 14 - Prob. 14.1.2AYLOCh. 14 - Prob. 14.1.3AYLOCh. 14 - Prob. 14.1.4AYLOCh. 14 - Prob. 14.1.5AYLOCh. 14 - Prob. 14.1.6AYLOCh. 14 - Prob. 14.1.7AYLOCh. 14 - Prob. 14.1.8AYLOCh. 14 - The funiculi and tracts of spinal white matterCh. 14 - Prob. 14.1.10AYLOCh. 14 - Prob. 14.1.11AYLOCh. 14 - Prob. 14.1.12AYLOCh. 14 - Prob. 14.1.13AYLOCh. 14 - Prob. 14.2.1AYLOCh. 14 - The differences between afferent and efferent...Ch. 14 - Prob. 14.2.3AYLOCh. 14 - Prob. 14.2.4AYLOCh. 14 - The number of spinal nerves and the system for...Ch. 14 - The structure of the proximal portion of a spinal...Ch. 14 - Prob. 14.2.7AYLOCh. 14 - The five plexuses of spinal nerves-their names,...Ch. 14 - Prob. 14.3.1AYLOCh. 14 - The components of a reflex arc and the path...Ch. 14 - Prob. 14.3.3AYLOCh. 14 - The differences between ipsilateral,...Ch. 14 - Prob. 14.3.5AYLOCh. 14 - Prob. 14.4.1AYLOCh. 14 - Prob. 14.4.2AYLOCh. 14 - Prob. 14.4.3AYLOCh. 14 - Below L2, the vertebral canal is occupied by a...Ch. 14 - The brachial plexus gives rise to all of the...Ch. 14 - Prob. 3TYRCh. 14 - Prob. 4TYRCh. 14 - Prob. 5TYRCh. 14 - Prob. 6TYRCh. 14 - In the spinal cord, the neurosomas of the lower...Ch. 14 - Prob. 8TYRCh. 14 - Prob. 9TYRCh. 14 - Prob. 10TYRCh. 14 - Prob. 11TYRCh. 14 - Prob. 12TYRCh. 14 - Prob. 13TYRCh. 14 - Motor innervation of the leg proper comes...Ch. 14 - Prob. 15TYRCh. 14 - The _______ nerves arise from the servical plexus...Ch. 14 - The crossing of a nerve fiber actract from the...Ch. 14 - Prob. 18TYRCh. 14 - Prob. 19TYRCh. 14 - Prob. 20TYRCh. 14 - Prob. 1BYMVCh. 14 - Prob. 2BYMVCh. 14 - Prob. 3BYMVCh. 14 - Prob. 4BYMVCh. 14 - State a meaning of each word element and give a...Ch. 14 - Prob. 6BYMVCh. 14 - Prob. 7BYMVCh. 14 - Prob. 8BYMVCh. 14 - Prob. 9BYMVCh. 14 - Prob. 10BYMVCh. 14 - Prob. 1WWWTSCh. 14 - Prob. 2WWWTSCh. 14 - Prob. 3WWWTSCh. 14 - Briefly explain why each of the following...Ch. 14 - Prob. 5WWWTSCh. 14 - Prob. 6WWWTSCh. 14 - Prob. 7WWWTSCh. 14 - Briefly explain why each of the following...Ch. 14 - Prob. 9WWWTSCh. 14 - Briefly explain why each of the following...Ch. 14 - Prob. 1TYCCh. 14 - Prob. 2TYCCh. 14 - Anthony gets into a fight between rival gangs. As...Ch. 14 - 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
- Complete transection of the spinal cord produces all of the following effects, except :-a- permanent loss of all sensations mediated by the cord below level of lesionb- permanent loss of voluntary movements by muscles innervated by the cord below level of lesionc- permanent loss of reflexes mediated by the cord below level of lesiond- temporary loss of micturition reflexesarrow_forwardA person who was injured in a car accident exhibits the followingsymptoms: extreme paresis on the right side, including the arm andleg; reduction of pain sensation on the left side; and normal tactilesensation on both sides. Which tracts are damaged? Where in the spinalcord did the patient suffer tract damage?arrow_forwardAs with most spinal nerves, the sacral spinal nerves become part of a nerve plexus, the sacral plexus. What is a nerve plexus? dermatome maps explain sensory supply, and this patient did not have any motor problems. So which root(s) of nerves were affected, dorsal or ventral? Explain your answer.arrow_forward
- Describe what type of sensory information comes into the following parts of the spinal cord: a. Visceral sensory nuclei b. Somatic sensory nucleiarrow_forwardA 45-year-old man complains of shooting pain down his right leg that worsens with sitting and coughing. He also has some numbness in the area. The physician tests sensations of the lateral thigh region. Which of the following spinal nerve levels is being tested? L4 and L5 S3 and S4 O L2 and L3 S1 and S2 O L1 and L2arrow_forwardFill in the blank: The dorsal root of a spinal nerve contains the _______________________ neurons.arrow_forward
- why does the injury of the spinal cord at the lumbar region would lead to paralysis and loss of sensations of the lower limbs (legs)?arrow_forwardA person with a spinal cord injury is experiencing loss of pain sensation in his left leg and loss of tactile sensation in his right leg. On which side of the spinal cord is the injury located? Explainarrow_forward(a) Describe the anatomical relationship of the white and gray rami communicantes to a spinal nerve, and to the dorsal and ventral rami. (b) Why are gray rami communicantes gray?arrow_forward
- An individual has a spinal cord injury superior to the area involved in the patellar reflex circuit such that all communication to the brain is broken off. How would this affect the operation of the patellar reflex circuit?arrow_forwardAn individual is unable to close his left eye with ears overflowing on the left cheek and saliva dribbling from the left mouth angle. what is the reason for his sad condition? What nerve is damaged and how is the integrity of the nerve tested?arrow_forwardSin Young incorrectly classified proprioception as general somatic motor because it refers to the innervation of muscles. Actually, proprioception is general somatic sensory. Explain why.arrow_forward
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