The purpose of the semicircular canals in your inner ears are for equillibrium. They have fluid in them that moves when you do and that stimulates hairs inside them that are connected to nerves.
Balance - they tell your brain which way up you are.
Semicircular Canals
The semicircular canals and the vestible are responsible for balance.
semicircular canals
The semicircular canals are three loops of interconnected canals within the inner ear which are responsible for detecting angular acceleration. The three canals are the superior posterior and lateral canals. These canals meet at the common crus or the ampulla. Superior semicircular canal Posterior semicircular canal Lateral semicircular canalThe three canals meet at the common crus or the ampulla. The ampulla is a small pouch-like structure that contains a fluid known as the endolymph. The ampulla is located at the base of the semicircular canals and serves as a sensory organ for maintaining balance and equilibrium.
semicircular canals
semicircular ducts
cerebellum
Semicircular Canals
semicircular canals
ampulla
labyrinthitis
for apex it is semicircular canals :)