Question

From the sacculus arises a narrow tube called

• A. Ductus endolymphaticus
• B. Endolymphatic sac
• C. Cochlea
• D. None of the above

Answer 1

The correct option is A Ductus endolymphaticus

Ductus endolymphaticus or endolymphatic duct is a narrow tube that arises from the posterior wall of saccule which is present in membranous labyrinth. This duct joins utriculosaccular duct. The function of ductus endolymphaticus is to maintain the flow of endolymph to other regions. It is also believed that endolymphatic duct blocks the entry of pathogens in the inner ear.

So, the correct answer is 'Ductus endolymphaticus'.