NIAL NERVE APPLICATION CRA QUESTIONS as what nerve? Is its composition considere

Question

NIAL NERVE APPLICATION CRA QUESTIONS as what nerve? Is its composition considered to be sensory, motor, or both? e XIl is known as what nerve? e ranial nerv able to or has difficulty moving their right eye in an inferior and lateral direction during the r pattern test, what muscle is affected? (Uise internet if necessary) 2) If a person is unable to or has diffi 2) If a en es, what muscle is affected? In what nerve might you expect a neurological lesion to be located? 3) In the Rinne test, why should a person still be able to hear the tuning fork after it is taken off their mastoid process and placed near their ear? 4) A lesion in cranial nerve I would leave a person unable to 5) What other "special sense" would the lesion above affect? 6) By flashing the penlight into the patient's eyes and observing their pupils you are simultaneously testing what 2 cranial nerves? Explain. 7) The three cranial nerves involved in taste are: E son arunsa niha ( o , 8) Which nerves above also play a role in the "gag reflex" GlosSo phanyngea 9) A lesion in cranial nerve VII could result in what neurological deficits? 10) If a person had numbness on the left side of their face along with weakness in bite on the same side, where would you expect the lesion to be located? Explain why this is more likely than the lesion being in the brain. 11) Why do we have a "blind spot"' in our visual field? 12) In the peripheral acuity test why was the subject not able to perceive the letter until they were right in front of them? 13) In the depth perception test why was the subject more accurate with two eyes open vs. just one eye?

Explanation / Answer

1. Hypoglossal nerve. It has both sensory and motor functions.

2. Crabial nerves IV and VI are involved

3. It is done to check if there is any obstruction in the passage of sound waves from the ear canal. The fork is palced at mastoid to check the bone conduction. The fork is then placed near the ear to check air conduction. Generally, air conduction is greater than bone conduction. If a person is able to hear the sound when the fork is placed near the mastoid bone, but fails to do so when palced near the ear, it indicates the auditory canal has some obstruction.

4. Cranial nerve I is concerned with olfactory sense. It  contains olfactor receptor neurons. The person would be unable to perceive smells or odours.

6. Cranial nerve II and cranial nerve II.

7. Facial nrve, Glossopharyngeal nerve (cranial nerve IX), and Trigenimal nerve (cranial nerve V)

8. Glossopharyngeal and vagus nerves

9. Decreased perception of taste, facial movements, and salivary secretions

10. Trigeminal nerve. It is most widely distributed nerve in head. It controls several responses like blinking of eyes, chewing, eye movement, etc. If the lesion is in brain, both the sides of face will be equally effected.

11. The region where the optic nerve and blood vessels leave the eye lack light receptors (rods and cones are absent there).

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