Central Nervous System
Electro Magnetic Radiation
Branches of Science
Diseases and Cause
Diseases Caused by Mosquitoes
Classification of Plants
Endocrine Glands and Types of Hormones
Human ear is most sensitive to sound frequency ranging between 20 to 20,000 Hz.
The ear consists of three parts—external, middle and internal.
The external ear collects and conducts the sound waves from the air .
The middle ear intensifies the force of sound vibration, without altering the amplitude.
The internal ear is concerned with the conversion of sound energy into nerve energy.
Three ossicles in ear — malleus, incus and stapes.
Clinical tests for hearing acuity : Rinne’s test,Weber’s test
© 2021 - All Rights with www.pscmentor.com