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Angular acceleration is detected by the basilar membrane cochlear maculae of the vestibular apparatus semicircular canals vestibulocerebellum

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Solution

Angular acceleration is detected by the semicircular canals.

Here's a step-by-step explanation:

  1. The semicircular canals are part of the inner ear, specifically the vestibular system, which is responsible for maintaining balance and spatial orientation.

  2. There are three semicircular canals: the horizontal (lateral), the anterior (superior), and the posterior (inferior). Each canal is filled with a fluid called endolymph and contains a motion sensor with tiny hairs (cilia) whose ends are embedded in a gelatinous structure called the cupula.

  3. When your head moves, the fluid inside the semicircular canals moves as well. This movement of fluid deflects the cupula and bends the cilia.

  4. The bending of the cilia generates nerve impulses that are sent to the brain through the vestibular nerve. The brain interprets these signals and makes necessary adjustments to maintain balance and orientation.

  5. Each semicircular canal detects rotations (angular accelerations) in a different plane. The horizontal canal detects horizontal head movements (as when you shake your head to say "no"), the anterior canal detects vertical head movements such as nodding, and the posterior canal detects tilts of the head from one side to the other.

So, in summary, the semicircular canals detect angular acceleration.

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