Microscopic Anatomy of the Cochlea [Organ of Corti]

The video tutorial provides an in-depth look at the anatomy of the inner ear, focusing on its components such as the tympanic membrane, the vestibular, cochlear, and tympanic ducts, and the membranes that separate them. It explains the role of the organ of Corti in hearing and how sound vibrations are transduced into electrical signals. The tutorial emphasizes understanding the structure before diving into the physiology, offering a comprehensive view of the ear's anatomy and its function in hearing.

Why is it important to understand the structure of the inner ear before learning its physiology?

• To better understand the physiology later

• To memorize the names of the parts

• To pass anatomy exams

• To draw accurate diagrams

What is the sequence of structures that vibrate when sound waves hit the tympanic membrane?

• Incus, malleus, stapes

• Stapes, incus, malleus

• Malleus, stapes, incus

• Malleus, incus, stapes

Which fluid is found in the vestibular and tympanic ducts?

• Perilymph

• Cerebrospinal fluid

• Endolymph

• Blood plasma

What is the primary function of the vestibular membrane?

• To separate the cochlear duct from the tympanic duct

• To separate the vestibular duct from the cochlear duct

• To support the organ of Corti

• To transmit sound waves

What is the role of the basilar membrane in the ear?

• It supports the organ of Corti and separates the cochlear duct from the tympanic duct

• It vibrates to transmit sound waves

• It contains hair cells for hearing

• It separates the vestibular duct from the cochlear duct

What is the function of the organ of Corti?

• To produce endolymph

• To separate the cochlear duct from the tympanic duct

• To transduce sound stimuli into electrical signals

• To amplify sound waves

How do hair cells in the organ of Corti contribute to hearing?

• They produce perilymph

• They scrape against the tectorial membrane to initiate sound

• They vibrate the tympanic membrane

• They amplify sound waves