Posterior ethmoidal sinus drains into:
Correct Answer: Superior meatus
Description: Ref: Diseases of Ear. Nose & Throat, by Dhingra chapter on Anatomy of NoseExplanation:Lateral wall of Nose* Lateral wall of nose - has 3 turbinates - superior, middle and inferior.Inferior turbinate is a separate bone.Superior and middle turbinates are parts of ethmoidal bone.Inferior meatusNasolacrimal duct opens into itSite for maxillary antral puncture and wash outSite for intranasal antrostomy Middle meatusStructures opening into it from anterior to posterior are:o Frontal sinus through frontonasal ducto Anterior ethmoidal cellso Middle ethmoidal cellso Maxillary sinusHas bulla ethmoidalis formed by middle ethmoidal cellsHiatus seminularis is a curved depression below the bullaeSuperior meatusPosterior ethmoidal cells open into itSphenoethmoidal recessLies above superior turbinateSphenoidal sinus opens into it
Category:
ENT
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now