Nose and Nasal Cavity | Structure & Functions
Supportive Bones and Cartilages of the Nasal Cavity
Posterior to the nose (nose external), is the nasal cavity. This large passage-way is framed and supported by several bones and cartilages.
- Supporting the arched roof of the cavity are the frontal bone, sphenoid bone, cribriform plate of the ethmoid bone and nasal bones.
- The lateral walls of the cavity are framed by the bodies of the two maxilla bones.
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- The cavity floor is supported by the palatine process of the maxilla bones and the horizontal plates of the palatine bones. Together, these bones are referred to as the hard palate.
- A thin vertical plate, the nasal septum, divides the nasal cavity into two chambers (nasal fossae).
- The septum consists of the vomer bone, perpendicular plate of the ethmoid bone, and septal cartilage.