Pearson eText Human Anatomy -- Instant Access (Pearson+)
9th Edition
ISBN: 9780135212936
Author: Frederic Martini, Robert Tallitsch
Publisher: PEARSON+
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Chapter 15, Problem 2CT
As a result of a snowboarding accident, John is unable to feel fine touch, pressure, vibration, or proprioception in his left upper limb distal to his wrist. He has no other sensory deficits. A neurologist suspects that a portion of his spinal cord has been damaged. Where in the spinal cord might the problem be located, and why?
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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.
your patient, Mr. Pratchett, is unable to open his eyelid. on examination, you find that his pupil is dilated, and he is unable to move his affected eye in any direction except laterally and downward, indicating that only his lateral rectus and superior oblique extrinsic eye muscles are functioning. based on this information, which cranial nerve do you think is involved in Mr. Pratchett's condition? explain your reasoning
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Chapter 15 Solutions
Pearson eText Human Anatomy -- Instant Access (Pearson+)
Ch. 15 - Match each numbered item with the most closely...Ch. 15 - Prob. 2RFTCh. 15 - Match each numbered item with the most closely...Ch. 15 - Prob. 4RFTCh. 15 - Prob. 5RFTCh. 15 - Match each numbered item with the most closely...Ch. 15 - Prob. 7RFTCh. 15 - Prob. 8RFTCh. 15 - Match each numbered item with the most closely...Ch. 15 - Prob. 10RFT
Ch. 15 - Prob. 11RFTCh. 15 - Which of the following are spinal tracts within...Ch. 15 - Prob. 13RFTCh. 15 - 14. Give the anatomical names of the spinal tracts...Ch. 15 - Prob. 1RCCh. 15 - Prob. 2RCCh. 15 - Why do the proportions of the sensory homunculus...Ch. 15 - Prob. 4RCCh. 15 - 5. Compare the actions directed by motor commands...Ch. 15 - Prob. 1CTCh. 15 - As a result of a snowboarding accident, John is...
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- Peyton felt strange when she awoke one morning. She could not hold a pen in her right hand when trying to write an entry in her diary, and her muscles were noticeably weaker on the right side of her body. Additionally, her husband noticed that she was slurring her speech, so he took her to the emergency room. What does the ER physician suspect has occurred? Where in the brain might the physician suspect that abnormal activity or perhaps a lesion is located, and why?arrow_forwardWhile playing football, Ramon is tackled hard and suffers an injury to his left leg. As he tries to get up, he finds that he cannot flex his left hip or extend the knee. Which nerve is damaged, and how would this damage affect sensory perception in his left leg?arrow_forwardDescribe the functional problems that would be experienced by a person in which these fiber tracts have been cut: (a) lateral spinothalamic, (b) ventral and dorsal spinocerebellar, (c) tectospinal.arrow_forward
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- A patient is taken to the hospital when his roommate noticed something wrong with the left side of his face during breakfast. It is discovered he has a problem with the nerve exiting the stylomastoid foramen, a disorder called Bell's palsy. Which of the following problems is this patient likely to have? He is unable to open his left eye He is unable to feel pressure on his left cheek O He is unable to raise his eyebrow on the left side O He is unable to chew O He is unable to protrude his tongue to the rightarrow_forwardDuring a robbery at his convenience store, Dustin was shotin the right cerebral hemisphere. He survived, although somespecific functions were impaired. Would Dustin have been morelikely or less likely to have survived if he had been shot in thebrainstem? Why?arrow_forwardChoose ALL the cranial nerves below that are both sensory and motor (mixed): Olfactory (1) Trigeminal (V) Vestibulocochlear (VIII) Facial (VII)arrow_forward
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