Inner Ear Anatomy and Functions

The video tutorial by Professor Long provides an in-depth look at the inner ear model, covering key structures such as the cochlea, semicircular canals, bony and membranous labyrinths, and the utricle and saccule. It explains the functions of the perilymph and endolymph fluids, as well as the roles of the cochlear and vestibular nerves. The tutorial also highlights the oval and round windows of the inner ear, offering a comprehensive understanding of its anatomy and physiology.

What structure in the inner ear resembles a snail shell?

• Ampulla

• Semicircular Canal

• Cochlea

• Vestibule

Which semicircular canal is oriented horizontally when viewed from the side?

• Superior Semicircular Canal

• Lateral Semicircular Canal

• Anterior Semicircular Canal

• Posterior Semicircular Canal

What is the function of the ampullae in the semicircular canals?

• Filtering blood

• Detecting sound waves

• Detecting rotational motion

• Balancing body temperature

What is the name of the fluid found between the bony and membranous labyrinths?

• Synovial Fluid

• Cerebrospinal Fluid

• Perilymph

• Endolymph

What is the membranous labyrinth made of?

• Bone

• Cartilage

• Muscle

• Membranous tissue

Which structure drains endolymph from the membranous labyrinth?

• Cochlear Duct

• Round Window

• Endolymphatic Duct

• Oval Window

What are the two enlarged pockets within the vestibule called?

• Oval and Round Windows

• Utricle and Saccule

• Cochlea and Vestibule

• Ampulla and Canal

Which fluid is found inside the membranous labyrinth?

• Cerebrospinal Fluid

• Endolymph

• Perilymph

• Blood

Which nerve is responsible for transmitting signals from the cochlea?

• Vestibular Nerve

• Auditory Nerve

• Cochlear Nerve

• Optic Nerve

What is the purpose of the oval window in the inner ear?

• To drain excess fluid

• To transmit sound vibrations to the cochlea

• To balance air pressure

• To protect the inner ear