Match each of the following descriptions with the correct cranial nerve. Each question will only have...

Match each of the following descriptions with the correct cranial nerve. Each question will only have 1 ANSWER. Answers may be used once, more than once, or not at all.

a. Olfactory (I) b. Optic (II) c. Oculomotor (III) d. Trochlear (IV) e. Trigeminal (V)

ab. Abducens (VI) ac. Facial (VII) ad. Vestibulocochlear (VIII) ae. Glossopharyngeal (IX)

bc. Vagus (X) bd. Accessory (XI) be. Hypoglossal

* Damage to this nerve might make you feel dizzy and nauseous

* Smoking, cocaine use, or a sinus infection may impair this nerve

* Clenching your teeth when you’re angry or stressed stimulates this nerve

* “Bearing down”, such as during defecation or lifting heavy objects stimulates this nerve

* Damage to this nerve would make it difficult to pronounce words like “lamellae” or “titillating” or “nonsense”

* Able to detect the taste of chocolate-covered pretzels

* Stimulated to help you see better in bright light

* Its function can be tested by using a tongue depressor to touch the uvula or tonsils

Solutions

Expert Solution

1.Damage to the vestibulocochlear nerve/,8th cranial nerve,can make u dizzy and nauseous.Although it is chief sensory nerve for hearing,it also responsible for control of balance and movements along with cerebellum.

2.Smoking,cocaine use,or a sinus infection may impair the olfactory nerve,as it is present in the roof of nasal cavity and in close proximity to sinuses.

3. Clenching teeth stimulates trigeminal nerve as it is the chief motor supply of muscles of mastication.

4.Bearing down such as during defecation or lifting heavy objects stimulates spinal assessory nerve as it supplie motor signals to trapezius,chief muscle of back.

5.Damage to vagus nerve will lead to difficulty in voice/speech production.As this supplies vocal cords,laryngeal muscles. Hypoglossal nerve is the chief motor supply to tongue,damage to this can cause difficulty in pronouncing words like lamellae,nonsence etc becoz the need proper articulation of tongue for their pronounce.

6.Taste sansation is due to choda tympani (branch of facial nerve )and lingual nerve(branch of trigeminal nerve ) in the anterior 2/3 of tongue. Glossopharyngeal nerve supply posterior 1/3rd of tongue.

7.see better in bright light is due to stimulation of optic nerve (sensory) and occulomotor nerve(give parasympathetic supply to constrictor pupilae,which causes miosis in bright light to see better).

8.Touching of uvula and tonsil stimulates vagus nerve.

Sydney Mullin answered 1 year ago

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