Question

when you spin while sitting in a swivel chair with your eyes closed, you can sense this movement by means of your

multiple choice

cochlea
saccule
semicircular ducts
utricle
spiral organ

Explanation:

The semicircular ducts (semicircular canals) are part of the inner ear's vestibular system. They detect rotational (angular) movements of the head. When you spin (a rotational movement), the fluid (endolymph) in the semicircular ducts moves, bending the hair cells within. This generates nerve impulses that the brain interprets as rotational movement. The cochlea is involved in hearing (not balance - related movement detection). The saccule and utricle (otolith organs) detect linear acceleration and head position relative to gravity, not rotational movement. The spiral organ (organ of Corti) is also related to hearing (located in the cochlea).

Answer:

semicircular ducts