Labyrinth

This tutorial explores the anatomy of the inner ear, focusing on the bony labyrinth. It covers the cochlea, responsible for hearing, the vestibule, which aids in balance, and the semicircular canals, which detect head rotation. The tutorial also discusses the nerve connections within the inner ear, including the cochlear and vestibular nerves.

Which part of the ear is primarily responsible for converting sound waves into neuronal impulses?

• External ear

• Middle ear

• Eardrum

• Inner ear

What is the primary function of the cochlear part of the labyrinth?

• Balance while stationary

• Hearing

• Balance while in motion

• Facial focus

What separates the cochlear duct from the Scala tympani?

• Reissner's membrane

• Basilar membrane

• Oval window

• Round window

Which structure in the vestibule is responsible for detecting linear movement in the vertical plane?

• Cochlear duct

• Utricle

• Saccule

• Semicircular canals

What connects the saccule to the cochlear duct?

• Common Bony cross

• Canalis reunions of Henson

• Basilar membrane

• Reissner's membrane

Which semicircular canal detects head rotations in the sagittal plane?

• Lateral semicircular canal

• Common Bony cross

• Posterior semicircular canal

• Anterior semicircular canal

What is the function of the crista ampullaris?

• Detecting linear acceleration

• Detecting angular acceleration

• Facial focus

• Hearing

Which nerve carries auditory sensory information from the cochlea to the brain?

• Facial nerve

• Vestibular nerve

• Optic nerve

• Cochlear nerve

What is the role of the vestibular ganglion?

• Detecting facial movements

• Forming synapses with vestibular hair cells

• Connecting the cochlea to the brain

• Transmitting auditory information

Which nerve is closely located to the labyrinth but does not innervate it?

• Vestibular nerve

• Optic nerve

• Facial nerve

• Cochlear nerve