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The inner ear is able to perceive:

1. angular acceleration
2. linear acceleration
3. Noise

  • A
    2 is correct, 1 and 3 are both false
  • B
    1 and 2 are correct, 3 is false
  • C
    2 and 3 are correct, 1 is false
  • D
    1 and 2 and 3 are correct

Refer to figure.

INNER EAR

it is the part of the inner ear, known as the 'cochlea', which transduces vibrations into nerve impulses, essentially performing an analysis of sound by frequency. The diaphragm attached to the stapes causes the fluid in the Cochlea to vibrate. Inside the cochlea there is a fine membrane covered with tiny hair-like cells. Their movement will be dependent on the volume and pitch of the original sound.
The inner ear also contains the vestibular system which is composed of:
  • The utricle and saccule organs within the vestibule are responsible for the perception of gravity and linear acceleration.
  • The semicircular canals are oriented in three planes, each at 90º angle to the other two. This allows them to sense yaw, pitch and roll (angular acceleration).

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