Step 1: Understanding the Question:
The question asks us to identify which of the listed anatomical auditory structures are located inside the inner ear.
Step 2: Detailed Explanation:
• The human ear is anatomically divided into three parts: the outer ear, the middle ear, and the inner ear.
• C. Organ of Corti: This is the sensory organ of hearing, located inside the fluid-filled cochlea of the inner ear.
• D. Basilar membrane: This is the structural membrane within the cochlea of the inner ear that supports the Organ of Corti and vibrates in response to fluid movement.
• A. Ear drum (Tympanic membrane): This membrane separates the outer ear canal from the middle ear cavity.
• E. Anvil (Incus): This is one of the three tiny auditory ossicles located in the middle ear cavity.
• B. Oval window: This is the membrane-covered opening that serves as the boundary between the middle ear and the inner ear, but is functionally classified as a middle/inner interface rather than an internal structure of the inner ear.
• Thus, only the cochlear structures, the Organ of Corti (C) and the Basilar membrane (D), are located within the inner ear.
Step 3: Final Answer:
The structures that are located within the inner ear are C & amp; D Only.