Nasal cavity (boundaries, sinus openings), vessels and nerves

Superior Boundaries

 * 1) Nasal bones
 * 2) Nasal part of frontal bone
 * 3) Cribriform plate (ethmoid bone)



Lateral Boundaries

 * 1) Frontal process of maxillary bone
 * 2) Perpendicular plate of palatine bone
 * 3) Nasal part of lacrimal bone
 * 4) Ethmoidal labyrinth
 * 5) Medial plate of pterygoid process
 * 6) Bone of inferior nasal concha

Medial Boundaries

 * 1) Mucous part
 * 2) Cartilaginous part - Septal cartilage
 * 3) Bony part - Perpendicular plate of ethmoid bone & Vomer

Inferior Boundaries

 * 1) Horizontal plate of palatine bone
 * 2) Palatine process of maxilla

Superior Nasal Meatus Sinus Openings

 * 1) Posterior ethmoidal air cells

Middle Nasal Meatus Sinus Openings

 * 1) Frontal sinus (semilunar hiatus)
 * 2) Anterior ethmoidal air cells (semilunar hiatus)
 * 3) Maxillary sinus (semilunar hiatus)
 * 4) Middle ethmoidal air cells (ethmoidal bulla)

Inferior Nasal Meatus Sinus Openings

 * 1) Nasolacrimal duct

Arterial Supply
The nasal cavity receives innervation from both external and internal carotid arteries.

Branches from external carotid artery include:
 * Maxillary -> Sphenopalatine
 * Maxillary -> Descending palatine -> Greater palatine
 * Facial -> Superior labial

Branches from Internal carotid artery include:
 * Opthalmic -> Anterior & posterior ethmoidal

Arterial Supply of Lateral Nasal Wall

 * Posterior lateral nasal branch (sphenopalatine)
 * Anterior ethmoidal branches
 * Middle ethmoidal branches
 * Lateral nasal branches of superior labial artery

Arterial Supply of Medial Nasal Wall

 * Nasopalatine artery
 * Greater palatine artery