Question

practice it
involved in sensing changes in the direction and movement of the head
semicircular waterways
semicircular drainages
semicircular canals
semicircular estuaries
semicircular docks

Explanation:

The semicircular canals are part of the inner ear. They are fluid - filled structures. When the head moves, the fluid inside the semicircular canals moves. This movement is detected by hair cells in the canals. The information from these hair cells is then sent to the brain. The brain uses this information to determine the direction and movement of the head.

Answer:

semicircular canals