Balancing Act: The Role of the Ear in Maintaining Equilibrium

The video explains how ears, particularly the inner ear, play a crucial role in maintaining balance. It describes the structure of the ear, focusing on the inner ear's semicircular canals, which contain fluid and hair cells that send signals to the brain about head movements. The video also illustrates how balance can be disrupted, such as when riding a merry-go-round, due to the inertia of the fluid in the semicircular canals.

What are the three main parts of the ear?

• Semicircular canals, cochlea, and vestibule

• Outer ear, middle ear, and inner ear

• Eardrum, cochlea, and auditory nerve

• Pinna, ear canal, and eardrum

How does the inner ear contribute to balance?

• By amplifying sound waves

• By working with the eyes and muscles

• By detecting changes in temperature

• By producing earwax

What is the fluid inside the semicircular canals called?

• Lymphatic fluid

• Perilymph

• Endolymph

• Cerebrospinal fluid

What are the hair cells at the base of the semicircular canals called?

• Cochlea

• Vestibules

• Cilia

• Ossicles

What is the role of the superior semicircular canal?

• Detects rotational head movements

• Detects tilting head movements

• Detects up-and-down head movements

• Detects side-to-side head movements

Which semicircular canal helps in understanding the 'no' motion?

• Posterior semicircular canal

• Lateral semicircular canal

• Superior semicircular canal

• Anterior semicircular canal

What is the function of the posterior semicircular canal?

• Detects up-and-down head movements

• Detects side-to-side head movements

• Detects tilting head movements

• Detects rotational head movements

What does the lateral semicircular canal detect?

• Up-and-down head movements

• Tilting head movements

• Side-to-side head movements

• Rotational head movements

What happens to the fluid in the semicircular canals when you are on a merry-go-round?

• It solidifies

• It evaporates

• It moves at the same rate as the ride

• It remains still

Why do you feel dizzy after getting off a merry-go-round?

• The brain receives accurate information

• The fluid continues to move due to inertia

• The fluid in the semicircular canals stops immediately

• The eyes are closed