Question
During ear examination, cough occurs due to stimulation of ‑
| A. |
Vagus
|
| B. |
Trigeminal
|
| C. |
Hypoglossal
|
| D. |
Trochlear
|
Show Answer
|
Correct Answer � A
Explanation
|
|
Ans. is ‘A’ i.e., Vagus.
The Xth cranial nerve
The Xth cranial nerve also supplying the larynx leads to cough on cleaning the ear canal.
Auricular branch of Vagus (Arnold’s nerve) and Facial nerve supplying the concha continues inwards to supply the posterior wall and floor of the EAC.
> The cough response caused while stimulating the ear canal is mediated by the vagus which also supplies the larynx.
