The paranasal sinuses and their site of drainage into the nose Name of sinus Site of drainage Frontal sinus Mid. meatus via infundibulum Maxillary sinus Mid. meatus through semilunar hiatus Sphenoid sinus Sphenoethmoidal recess Ethmoidal sinuses anterior group Mid. meatus middle group Mid. meatus posterior group Sup. nasal meatus Copy Right- Hongqi ZHANG-Department of Anatomy-Fudan University
Copy Right- Hongqi ZHANG-Department of Anatomy-Fudan University Copy Right- Hongqi ZHANG-Department of Anatomy-Fudan University The paranasal sinuses and their site of drainage into the nose Name of sinus Site of drainage Frontal sinus Mid. meatus via infundibulum Maxillary sinus Mid. meatus through semilunar hiatus Sphenoid sinus Sphenoethmoidal recess Ethmoidal sinuses anterior group middle group posterior group Mid. meatus Mid. meatus Sup. nasal meatus
Frontal Inus Ethmoidal sInuses sInus Removed anterolateral wall of sinus Frontal s Ethmoidal s Sphenoidal s axillary s
Frontal sinus Ethmoidal sinuses Sphenoidal sinus Maxillary sinus Removed anterolateral wall of sinus Frontal s. Sphenoidal s. Ethmoidal s. Maxillary s
Copy Rig niversity openings of paranasal sinus 2 Lateral wall of nasal cavity(remove nasal concha partially 1. Frontal sinus-open at ant. part of mid nasal meatus 2. Sphenoidal sinus-open at sphenethmoid recess 3. Maxillary sinus-open at mid part of mid nasal meatus Copy Right- Hongqi ZHANG-Department of Anatomy-Fudan University
Copy Right- Hongqi ZHANG-Department of Anatomy-Fudan University Copy Right- Hongqi ZHANG-Department of Anatomy-Fudan University openings of paranasal sinus 1 2 Lateral wall of nasal cavity (remove nasal concha partially 1. Frontal sinus – open at ant. part of mid. nasal meatus 2. Sphenoidal sinus - open at sphenoethmoid recess. 3. Maxillary sinus – open at mid. part of mid. nasal meatus 3
Location and opening of maxillary sinus Paranasal Sinuses The opening of Maxillary sinus Maxillary sinus Maxillary sinus-opening in middle meatus Copy Right- Hongqi ZHANG-Department of Anatomy-Fudan University
Copy Right- Hongqi ZHANG-Department of Anatomy-Fudan University Copy Right- Hongqi ZHANG-Department of Anatomy-Fudan University Location and opening of maxillary sinus Maxillary sinus －opening in middle meatus Maxillary sinus The opening of Maxillary sinus
COpy Right Openings of paranasal sinus sily Ethmoidal sinus have three groups. Ant. mid group of ethmoidal sinus open at mid nasal The opening of meatus Posterior group open at sup. nasal nasolacraminal duct meatus Copy Right- Hongqi ZHANG-Department of Anatomy-Fudan University
Copy Right- Hongqi ZHANG-Department of Anatomy-Fudan University Copy Right- Hongqi ZHANG-Department of Anatomy-Fudan University Openings of paranasal sinus The opening of nasolacraminal duct Ethmoidal sinus have three groups. Ant.& mid. group of ethmoidal sinus open at mid nasal meatus. Posterior group open at sup.nasal meatus