What are the three canals called that detect rotational movement for balance and equilibrium?

The three canals that detect rotational movement for balance and equilibrium are known as the semi-circular canals. These structures are part of the vestibular system located within the inner ear. The semi-circular canals are arranged in three different planes: horizontal, vertical, and a combination of both. As the head rotates, fluid within these canals moves, stimulating sensory hair cells that send signals to the brain about the head's position and movement. This information is crucial for maintaining balance and coordinating movements.

Other options, such as auditory canals, refer primarily to structures associated with hearing rather than balance. Myringotomy channels are not a recognized anatomical structure; instead, myringotomy is a surgical procedure involving the eardrum. Lastly, the incus is one of the small bones in the middle ear involved in the hearing process, not in detecting rotational movements for balance.