Senses: Hearing and Balance

The video explains how the human ear functions, covering the outer, middle, and inner ear. It describes how sound waves are processed, the role of the cochlea, and how the brain interprets sound. The video also highlights the importance of protecting hearing from loud noises and explains how the ear helps maintain balance, addressing issues like motion sickness.

What is the primary function of the pinna in the outer ear?

• To transmit nerve impulses to the brain

• To vibrate in response to sound

• To funnel sounds into the auditory canal

• To produce sound waves

Which structure in the middle ear vibrates when sound waves hit it?

• Tympanic membrane

• Pinna

• Cochlea

• Semicircular canals

What is the role of the Eustachian tube in the ear?

• To detect changes in head position

• To equalize air pressure between the middle ear and the environment

• To produce earwax

• To transmit sound to the brain

What part of the ear contains hair cells that are sensitive to sound vibrations?

• Pinna

• Cochlea

• Eardrum

• Eustachian tube

How can long-term exposure to loud sounds affect hearing?

• It has no effect on hearing

• It can cause reversible hearing loss

• It can improve hearing sensitivity

• It can lead to irreversible hearing damage

What is the function of the semicircular canals in the inner ear?

• To maintain balance

• To detect sound waves

• To produce earwax

• To transmit sound to the brain

What might cause motion sickness according to the video?

• Understimulation of the auditory canal

• Overstimulation of the cochlea

• Overstimulation of the semicircular canals

• Understimulation of the eardrum