Human Ear | English
Channel: Arvind Gupta
Date: 13/03/2017

How sound reaches the human ear is still a mystery because what happens inside the ear is invisible to us. You can take a SCREEN SHOT of this template and then print it out. On folding and subsequently opening the template will help us understand the path which sound takes to reach our brain.
What we see externally is the OUTER EAR. Sound waves enter the ear canal and make the EARDRUM vibrate. This action moves the tiny chain of bones in the MIDDLE EAR. The last bone in this chain “knocks” on the membrane window of the COCHLEA. The inner ear is shaped like a SNAIL and is therefore called the COCHLEA. The striking of the small bone puts pressure on the fluid inside the cochlea. The purpose of these bones is to amplify the sound. Inside the cochlea there are thousands of tiny hair cells which receive the sound, create electrical impulses and pass it on to the brain.

This work is supported by IUCAA (www.iucaa.in) and TATA Trust (http://www.tatatrusts.org/) and (www.tata.com/aboutus/sub_index/Tata-trusts)

TATA Trust: Education is one of the key focus areas for Tata Trusts, aiming towards enabling access of quality education to the underprivileged population in India. To facilitate quality in teaching and learning of Science education through workshops, capacity building and resource creation, Tata Trusts have been supporting Muktangan Vigyan Shodhika (MVS), IUCAA's Children’s Science Centre, since inception. To know more about other initiatives of Tata Trusts, please visit www.tatatrusts.org

Credits:,Ashok Rupner, Pradnya Pujari, Shivaji Mane, Jyoti Hiremath, Arvind Gupta