Question

What is the function of:
Iris
Cochlea
Pinna​

Answer 1

1.The iris (plural: irides or irises) is a thin, circular structure in the eye, responsible for controlling the diameter and size of the pupil and thus the amount of light reaching the retina. Eye color is defined by that of the iris.

2.This occurs at the organ of Corti, which is located all along the cochlea. It is composed of sensorycells called hair cells, which convert vibrations into neural messages. These messages are then passed to the auditory nerve and carried up to the brain.

3.The pinna is the only visible part of the ear (the auricle) with its special helical shape. It is the first part of the ear that reacts with sound. The function of the pinna is to act as a kind of funnel which assists in directing the sound further into the ear.

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Answer 2

$\huge \bf\pink{\mid{\overline {\underline {Answer :}}} \mid}$

$\underline {\Huge\bold{Functions:-}}$

$\underline {\underline {\text{Cochlea :}}}$

In Cochlea, sound waves are converted into electrical impulses. This electric impulse is then carried on to brain and then helps us in hearing.

$\underline {\underline {\text{Iris :}}}$

Iris helps in controlling the amount of light entering the eye by regulating the size of pupil.

$\underline {\underline {\text{Pinna:}}}$

The function of pinna to direct all the sound waves coming into the ear canal.