The planes of movement in the vestibular system are orthogonal at what angle?

The planes of movement in the vestibular system are orthogonal at what angle?

• A. 45 degrees
• B. 90 degrees
• C. 180 degrees
• D. 120 degrees

Answer: (B)

The vestibular system detects head rotation using three semicircular canals arranged in three mutually perpendicular planes. This means each plane is at a right angle to the others, so the angle between any two planes is 90 degrees. That perpendicular arrangement lets rotations around different axes produce distinct, largely independent signals from the canals, giving a clear sense of yaw, pitch, and roll. In short, the planes are orthogonal, forming a 90-degree separation.

The vestibular system detects head rotation using three semicircular canals arranged in three mutually perpendicular planes. This means each plane is at a right angle to the others, so the angle between any two planes is 90 degrees. That perpendicular arrangement lets rotations around different axes produce distinct, largely independent signals from the canals, giving a clear sense of yaw, pitch, and roll. In short, the planes are orthogonal, forming a 90-degree separation.