15. A 22-year-old man is brought to the emergency department 1 hour after being involved in a motor vehicle collision. Neurologic examination shows inaccurate finger-to-nose movements of the left upper extremity. He has an ataxic gait with a tendency to fall to the left. This patient most likely has a lesion in which of the following structures? A) Cerebellar hemisphere on the left B) Cerebellar hemisphere on the right C) Corticospinal tract on the left D) Corticospinal tract on the right E) Vestibular semicircular canals on the left F) Vestibular semicircular canals on the right
15. A 22-year-old man is brought to the emergency department 1 hour after being involved in a motor vehicle collision. Neurologic examination shows inaccurate finger-to-nose movements of the left upper extremity. He has an ataxic gait with a tendency to fall to the left. This patient most likely has a lesion in which of the following structures? A) Cerebellar hemisphere on the left B) Cerebellar hemisphere on the right C) Corticospinal tract on the left D) Corticospinal tract on the right E) Vestibular semicircular canals on the left F) Vestibular semicircular canals on the right
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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
Transcribed Image Text:### Neurological Case Study and Quiz
#### Case Study:
A 22-year-old man is brought to the emergency department 1 hour after being involved in a motor vehicle collision. Neurologic examination shows inaccurate finger-to-nose movements of the left upper extremity. He has an ataxic gait with a tendency to fall to the left. This patient most likely has a lesion in which of the following structures?
### Quiz: Identifying the Lesion Location
Select the most likely structure affected based on the patient's symptoms:
1. **A) Cerebellar hemisphere on the left**
2. **B) Cerebellar hemisphere on the right**
3. **C) Corticospinal tract on the left**
4. **D) Corticospinal tract on the right**
5. **E) Vestibular semicircular canals on the left**
6. **F) Vestibular semicircular canals on the right**
Think about which structure would most likely cause the symptoms described (inaccurate finger-to-nose movements, ataxic gait, and a tendency to fall to one side) and choose the best answer.
---
This case study is designed to help you apply your understanding of neuroanatomy and the neurological consequences of trauma. Consider the role and function of each structure listed above before making your selection.
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