The sensory receptors of the inner ear are the...

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Reiterating the question: The sensory receptors of the inner ear are the... 
Option 1: Cochlear cells. This term is not standard for the primary sensory receptors; while the cochlea contains sensory structures, the specific receptor cells are the hair cells, not generic 'cochlear cells,' so this is not the best descriptor.
Option 2: Maculae. Maculae are sensory receptor organs located in the vestibule and detect linear acceleration and head position. They are indeed receptors within the inner ear, but the question asks for the sensory receptors in the inner ear in general, not a specific vestibular structure, making this an incomplete or overly specific choice.
Option 3: Sensory neurons. Sensory neurons are the afferent neurons that carry signals toward the brain; they are not the primary sensory receptors themselves, so labeling them as the receptors is inaccurate.
Option 4: Vestibular cells. Vestibular cells refer to supporting or supporting-like cells within the vestibular apparatus, not the primary receptor cells, so this option does not identify the actual receptors.
Option 5: Hair cells. Hair cells are the mechanoreceptors of the inner ear. They transduce mechanical vibrations into neural signals and are the principal sensory receptors found in both the cochlea (organ of Corti) and the vestibular organs. This makes them the correct descriptor for the inner ear’s sensory receptors.
In summary, among the provided choices, hair cells uniquely fulfill the role of the sensory receptors responsible for converting mechanical stimuli into neural signals within the inner ear, whereas the other options refer to supporting structures, neurons, or non-receptor components.

BIOLOGY 211-B09C HW #15: The Ear

The sensory receptors of the inner ear are the...

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