How do our ears hear sound?
Our ears hear sound through a process where sound waves enter the ear canal, causing the eardrum to vibrate. These vibrations are then transmitted through the middle ear bones to the cochlea in the inner ear, where tiny hair cells convert the vibrations into electrical signals. These signals are sent to the brain through the auditory nerve, where they are interpreted as sound.
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MCQs
1. What are the tiny bones in the middle ear called?
A) Stirrup, Anvil, and Hammer
B) Femur, Tibia, and Fibula
C) Radius, Ulna, and Humerus
D) Atlas, Axis, and Cervix
2. What part of the inner ear is filled with fluid and hair cells that help us hear?
A) Cochlea
B) Eustachian tube
C) Ear canal
D) Auditory nerve
3. How do sound waves travel from the outer ear to the inner ear?
A) Through the auditory nerve
B) Through the Eustachian tube
C) Through the ear canal, ear drum, and bones of the middle ear
D) Directly into the cochlea
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