Question

Acoustic spots in frog is present in

• A. Osseous labyrinth
• B. Carotid
• C. Membranous labyrinth
• D. All of the above

Answer 1

Answer: (C)

Membranous labyrinth

The sensory (receptor) epithelium of the inner ear is distributed unevenly. In the oval and round saccules, it forms the acoustic spots (maculae), sensory cells with short hairs and acoustic (ampullar) crests that protrude in the form of plates into the inner cavity of the ampulla of the semicircular canals; the sensory cells of the crests have long hairs.

So, the correct answer is option C.