Final answer:
The parts responsible for the sense of equilibrium are located in the inner ear, specifically in the utricle, saccule, and semicircular canals, where they sense head position and movement to help maintain balance.
Step-by-step explanation:
Location of Sense of Equilibrium
The biological parts responsible for your sense of equilibrium are located in the inner ear. Specifically, these parts include the utricle and saccule, which sense head position and the semicircular canals, which sense head movement. These structures contain mechanoreceptor hair cells with stereocilia that respond to changes in head orientation and motion. The neural signals from these cells are communicated to the brain via the vestibulocochlear nerve, which includes the vestibular ganglion. The cerebellum and brain stem then process these signals to maintain balance and spatial orientation.