Question

The snail-shaped structure of the inner ear that is filled with fluid is known as:

• A. Auditory nerve
• B. Pinna
• C. Eardrum
• D. Cochlea

Hint:

Associate the word "cochlea" with its Greek root "kokhlias," which means snail or screw. This will help you remember its distinctive snail-like shape.

Answer 1

The Correct Option is D

Step 1: Understand the Question: Identify the inner ear structure described as snail-shaped and fluid-filled.

Step 2: Analyze the Options:
(A) Auditory nerve: Transmits sound signals to the brain; not snail-shaped.
(B) Pinna: The external ear flap; not snail-shaped and in the outer ear.
(C) Eardrum (Tympanic membrane): Separates outer and middle ear; not snail-shaped.
(D) Cochlea: Located in the inner ear, it's a spiral, snail-shell-like structure filled with fluid where sound is converted to nerve signals. This matches the description.

Step 3: Conclusion: The cochlea is the correct anatomical structure.