The ________ helps in equalising the pressure on either side of the eardrum.
Show answer & explanation
Correct answer: C
Explanation
The correct option is option 3 i.e. eustachian tube
| Eustachian tube | The eustachian tube is a canal that connects the middle ear to the nasopharynx, which consists of the upper throat and the back of the nasal cavity. |
| It controls the pressure within the middle ear, making it equal to the air pressure outside the body. |