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NEET Biology Neural Control and Coordination Question Bank Self Evaluation Test - Neural Control and Co-ordination

  • question_answer
    "X" is spiral shaped structure (given below) consisting of hair cells that serve as receptors for auditory stimuli. Identify "X" and its label & location (marked as 1, 2, 3 and 4) from the given diagrammatic representation of the sectional view of cochlea.

    A) X- Organ of corti, 2, 3.

    B) X- Eustachian tube, 1, 2.

    C) X- Semicircular canal, 3, 4.

    D) X- Crista ampullaris, 1, 4.

    Correct Answer: A

    Solution :

    [a] The marked label 1, 2, 3 and 4 are respectively Reissner's membrane, organ of Corti, basilar membrane and tectorial membrane. Organ of Corti (X) is a sensitive element in the inner ear. It is a spiral shaped structure located on the basilar membrane (3) which contains hair cells that acts as auditory receptors. The hair cells are present in rows on the internal side of the organ of corti.


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