Final answer:
The two chambers of the vestibule are the utricle and the saccule, which are responsible for detecting linear accelerations and head positions relative to gravity.
Step-by-step explanation:
The vestibule, which is part of the vestibular system for balance, located in the inner ear, has two chambers. These are the utricle and the saccule. Both of these chambers are responsible for detecting linear accelerations and head positions relative to gravity.
The vestibule is distinct from the semicircular canals, which detect rotational movements, and the cochlea, which is involved in hearing. The utricle and the saccule both contain hair cells with stereocilia embedded in a gelatinous layer topped with calcium carbonate crystals. These otolith organs are crucial in the process of detecting changes in head position, contributing to our sense of equilibrium.