Question at position 2 In the auditory system, the ________ is a tubular, fluid-filled structure that is coiled up like a snail.pinnaauditory nervecochleaear drum单项选择题
A
pinna
B
auditory nerve
C
cochlea
D
ear drum

Question

Question at position 2 In the auditory system, the ________ is a tubular, fluid-filled structure that is coiled up like a snail.pinnaauditory nervecochleaear drum

BlackTom AI · Accepted Answer

This question asks us to identify a specific anatomical structure in the auditory system that matches the description: a tubular, fluid-filled structure coiled up like a snail.
Option 1: 'pinna' — The pinna is the outer part of the ear that collects sound and funnels it into the ear canal, not a tubular, snail-shaped fluid-filled structure. This choice describes a part involved in gathering sound rather than housing the fluid-filled cochlear channels.
Option 2: 'auditory nerve' — The auditory (vestibulocochlear) nerve carries auditory information from the cochlea to the brain, but it is not a tubular, fluid-filled structure nor coiled like a snail. It is a nerve bundle, not a snail-shaped cavity.
Option 3: 'cochlea' — The cochlea is exactly the structure described: a tubular, fluid-filled, coiled chamber in the inner ear that resembles a snail shell. It houses the fluid-filled chambers and hair cells essential for translating sound vibrations into neural signals.
Option 4: 'ear drum' — The eardrum, or tympanic membrane, is a thin membrane at the end of the ear canal that vibrates in response to sound waves. It is not tubular or fluid-filled, and it is not coiled like a snail, so this choice does not fit the description.
In summary, the description points to the cochlea as the snail-like, fluid-filled structure central to hearing, while the other options refer to different parts of the auditory system with distinct roles or anatomical forms.

Question at position 2 In the auditory system, the ________ is a tubular, fluid-filled structure that is coiled up like a snail.pinnaauditory nervecochleaear drum单项选择题

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