Question

The diagram alongside represents the structure of the human ear. Study the same and answer the questions that follow.

1. Give the biological term for the part labelled ‘A’ and state its function.
2. Name the part labelled ‘B’.
3. Name the part labelled ‘C’.
4. Give the function of ear wax.

Answer 1

1. The biological term for part A is the ear ossicles. They amplify and transmit sound vibrations from the tympanic membrane (eardrum) across the middle ear cavity to the oval window of the inner ear.
2. Eustachian tube
3. Auditory nerve
4. Ear wax protects the ear canal by trapping dust, dirt, insects, and microorganisms, preventing them from entering deeper and damaging the eardrum. It also lubricates the canal skin and provides mild antibacterial properties.