Final answer:
The kinocilium is oriented towards the ampulla on the left side and towards the cupula on the right side of the head.
Step-by-step explanation:
In the left side of the head, the kinocilium is oriented towards the ampulla. On the right side of the head, it is oriented towards the cupula.
The kinocilium is a hair-like structure found on specialized cells called hair cells in the inner ear. These hair cells are responsible for detecting head movements and sending signals to the brain to maintain balance and coordinate movements.
In the semicircular canals of the inner ear, the kinocilium is located within a structure called the ampulla. The ampulla contains hair cells that respond to rotational movement of the head. When the head rotates, the fluid within the semicircular canals lags, causing the cupula to bend and the hair cells to detect the direction of the head movement.
Therefore, on the left side of the head, the kinocilium is oriented towards the ampulla in the horizontal plane, and on the right side of the head, it is oriented towards the cupula in the vertical plane.