Inner Ear Anatomy and Functions

The video tutorial provides an in-depth exploration of the internal ear, focusing on its anatomical structure and function. It covers the bony and membranous labyrinths, detailing the cochlea, vestibule, and semicircular canals. The tutorial explains how these structures contribute to hearing and balance, highlighting the roles of the cochlear and vestibular nerves.

Where is the internal ear located?

• In the frontal bone

• In the occipital bone

• In the parietal bone

• In the temporal bone

What fluid fills the bony labyrinth?

• Cerebrospinal fluid

• Endolymph

• Perilymph

• Blood

What is the shape of the cochlea?

• Cylindrical

• Conical

• Cuboidal

• Spherical

Which part of the vestibule communicates with the middle ear?

• Vestibular aqueduct

• Cochlear aqueduct

• Fenestra vestibuli

• Fenestra cochleae

How many semicircular canals are there in the bony labyrinth?

• Five

• Four

• Three

• Two

What is the function of the cristae in the semicircular ducts?

• Detecting sound

• Sensing static balance

• Sensing angular acceleration

• Regulating endolymph

What fluid fills the membranous labyrinth?

• Endolymph

• Perilymph

• Cerebrospinal fluid

• Blood

Which structure connects the saccule to the cochlear duct?

• Ductus reunions

• Utriculo-sacular duct

• Endolymphatic duct

• Cochlear aqueduct

What is the role of the spiral organ of Corti?

• Perilymph circulation

• Endolymph production

• Hearing reception

• Balance regulation

What is the function of the maculae in the saccule and utricle?

• Regulating endolymph

• Sensing angular acceleration

• Sensing static balance

• Detecting sound