Question

The true sense of equilibrium is located in
(a) Utriculus
(b) Sacculus
(c) Semicircular ducts
(d) Cochlea

Answer 1

Hint: The true sense of equilibrium is located in a region that consists of three channels that provide directional balance and equilibrium information to the brain. They are tubes that are intertwined in the innermost ear. These channels are anterior, posterior, and lateral.

Complete step by step answer:
Along with hearing, the inner ear is responsible for encoding equilibrium information (the sense of balance), which it does in the vestibule and semicircular canals, structures often referred to collectively as the vestibular apparatus.
Three ring-like extensions from the vestibule are the semicircular canals and are mainly responsible for dynamic equilibrium. In the horizontal plane, one ring is oriented and two others are in the vertical plane.
The semicircular ducts usually provide sensory input for rotary movement experiences. They orient themselves around the axes of the pitch, roll, and yaw.
Knowledge regarding static equilibrium and linear (dynamic) acceleration comes from the utricle and saccule within the vestibule. Each saccule and utricle contains a sense organ called the macula, where stereocilia and its supporting cells are discovered. These maculae (plural) are oriented to each other by 90 degrees so that they respond to positions in various planes. The cochlea is the part of the hearing involved within the inner ear.

So, the correct answer is, ‘(c) Semicircular ducts’.

Note:
Three semi-circular and interconnected tubes found in the inner ear are semicircular ducts or canals. These are a portion of the bony labyrinth. A fluid called endolymph is found in them. Their base is swollen and called the ampulla, which includes a crista ampullaris projected ridgeIt comprises hair cells that have cytoplasmic projections called stereocilia on the apical end. There are receptors in Crista that sense body movement and maintain dynamic equilibrium.