2.3 The Bones and Cartilages of the Nose Flashcards
What are the functions of the Nose?
- Traps Dirt
- Humidification of the air
- Olfaction (Smell)
- Respiration
- Reception and Elimination of secretions from the Nasal Mucosa, Paranasal Sinuses, and Nasocrimal Ducts
Which bone does the Nasal Bone articulate to superiorly?
The Frontal Bone
What articulates with the Nasal bones laterally?
The Frontal Process of the Maxilla
What are the bones which participate in the forming of the Roof of the Nasal Cavity?
Anterior to Posterior:
1. Nasal Bones
2. Part of the Frontal Bone
3. The Ethmoid Bone (Containing the Cribriform Plate)
4. The Sphenoid Bone
What are the bones which participate in the forming of the Floor of the Nasal Cavity?
Anterior to Posterior:
1. Palatine Process of the Maxilla
2. Palatine Bone
3. Soft Palate
What are the bones which participate in the forming of the Lateral Wall of the Nasal Cavity?
Superior to Inferior:
1. Superior Concha (Formed from the Perpendicular Plate of the Ethmoid Bone)
2. Middle Concha (Formed from the Perpendicular Plate of the Ethmoid Bone)
3. Inferior Concha (This is a Bony Structure by Itself)
4. Perpendicular Plate of the Palatine Bone
5. Maxilla
What does the Nasal Septum do?
It divides the Nasal Cavity into 2 halves
What forms the Nasal Septum?
Anterior - Septal Cartillage
Posterosuperior - Perpendicular Plate of the Ethmoid Bone
Posteroinferior - Vomer
Name the important parts of the Ethmoid Bone:
- The Cribriform Plate
- The Crista Gali
- The Central Plate
- The Superior Concha
- The Middle Concha
- Ethmoid Air Cells
What passes through the Cribriform Plate?
Olfactory Nerves
What attaches to the Crista Gali?
The Falx Cerebri (A fold in Dural Tissue)
What 2 bones form the Hard Palate?
- The Palatine Process of the Maxilla
- The Palatine Bone
