what structure lies nearly vertically on the wall of the saccule
THE SACCULE AND UTRICLE. The sensory receptors for static equilibrium are located in structures called maculae (singular is macula), which are found in the saccule and utricle. The macula sacculi lies nearly vertically in the wall of the saccule, and the macula utriculi lies almost horizontally on the floor of the utricle.