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What two bones form the nasal septum quizlet?
What 2 bones make up the back of nasal septum? Perpendicular plate of ethmoid bone and perpendicular of vomer bone.
What are the structures of the nasal septum?
The nasal septum is composed of four structures:
- Perpendicular plate of ethmoid bone.
- Vomer bone.
- Septal nasal cartilage.
- Maxillary bone (the crest)
Is nasal bone part of the nasal septum?
The internal nasal septum separates the nasal cavity into two nostrils. The bones that contribute to the nasal septum can be divided into: Paired bones: Nasal, maxillary and palatine bones. Unpaired bones: Ethmoid and vomer bones.
What Innervates nasal mucosa?
A subset of trigeminal nerve fibers, particularly those containing the neuropeptides substance P and calcitonin gene-related peptide (CGRP), responds to chemical irritants in the environment. Axons in the ethmoid and nasopalatine branches of the trigeminal nerve innervate the nasal mucosa where they ramify repeatedly.
What makes up the nasal bone?
The upper vault of your nose, or bony vault, is actually the only bony part of your nose. The other two vaults towards the tip of your nose are actually made of cartilage. The nasal bones, along with the frontal processes of the maxilla bone form the bony vault, make up the thickest part of your nose.
Which part of the ethmoid bone forms the superior part of the nasal septum?
Perpendicular plate
Ethmoid bone
| Ethmoidal labyrinths | Contain ethmoidal cells (little cavities) which form the ethmoidal sinus. The labyrinths form the superior and middle nasal conchae. The ethmoidal bulla is connected to the maxillary sinus via the hiatus semilunaris. |
|---|---|
| Perpendicular plate | It forms part of the nasal septum. |
Which bony features surround the nasal cavity?
Paranasal sinuses are air-filled cavities in the frontal, maxilae, ethmoid, and sphenoid bones. These sinuses, which have the same names as the bones in which they are located, surround the nasal cavity and open into it.