Acoustic spots in frog is present in

Options

(a) Ossious labyrinth
(b) Carotid
(c) Membranous labyrinth
(d) All of these

Correct Answer:

Membranous labyrinth

Explanation:

Acoustic spots occur in the ampullae of semicircular ducts of internal ear or the membranous labyrinth. The wall of the membranous labyrinth of frog is lined with cubical epithelial cells. The epithelial lining, at certain places, is modified to form sensory patches called acoustic spots. There exists one in the utriculus, one in the sacculus, and one in the lagens. The sensory paths of ampullae are called cristae, while the other one are known as maculae.