Which valve is present at opening of nasolacrimal duct-
Correct Answer: Hasner's valve
Description: Ans. is 'a' i.e., Hasner's valve o Nasolacrimal duct opens into inferior meatus and is closed by a mucosal flap called Hasner's valve,o Heister valve (spiral valve) is present in cyclic duct.
Category:
Anatomy
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