The hair cells of the cochlea and those of the vestibular sacs are similar in that
A) hair cells in each system are activated by a shearing force exerted on the cilia.
B) each hair cell in each system contains one cilium.
C) hair cell activation is accompanied by the closing of membrane ion channels.
D) each ciliary membrane is hyperpolarized by movement of the cilia.
E) Hair cells in each system are replaced weekly..
Answer: A
Rationale: The hair cells of the cochlea and those of the vestibular sacs are similar in that hair cells in each system are activated by a shearing force exerted on the cilia.
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