Working of pinna

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Working of pinna

Posted by Priyanshu Raj 7 years, 3 months ago

CBSE > Class 08 > Science

1 answers

Yogita Ingle 7 years, 3 months ago

There are three parts of ear – the outer ear, middle ear and the inner ear. The outer ear consists of pinna and ear canal. The compressions in the air reach the outer ear called pinna which directs the sound to travel through the ear canal to reach the ear drum or tympanic membrane. Due to these compressions, the membrane starts vibrating. This thin membrane vibrates and relaxes depending on the amplitude of compression in air. The vibration is then passed to three bones in the ear connected to the ear drum: hammer, anvil and stirrup and is amplified about 20 times than the actual vibration.

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Posted by Lavanya Ayyagari 2 months ago

CBSE > Class 08 > Science