At the end of each membranous semicircular duct, there is what would look like a bulge, which is called the ampulla. On the inside of the membranous labyrinth is a special fluid called endolymph.
प्रत्येक झिल्लीयुक्‍त अर्धवृत्ताकार नली के अन्त में, कुछ होता है जो उभार की तरह लगता है, जिसे कलशिका कहा जाता है ।