Nasal Cavity and Nasopharynx Flashcards
What are the cartilage regions of the nose (distal to proximal)
Alar, septal and lateral
What bones comprise the lateral nasal cavity
Frontal, ethmoid, sphenoid, palatine, maxilla
What bones comprise the medial nasal cavity
All the same as the lateral except there is septa cartilage, vomer bones to help create the posterior nare
Risks of ethmoid bone fractures
Very close to brain due to the crista glai and cribiform plate being intracranial, can lead to infecction, rhinorrhea (CSF from nose) and heamorrhage
Features of Nasal cavity (medial)
There is a vascular membrane to heat up air entering and rupture can lead to nose bleeds, anterior region is the vestibule, olfactory epithelium and respiratory epilthelium
Features of Nasal cavity (Lateral)
There are 3 Concha (S,M and I) thats are involved in producing turbulent air flow to increase contact with vascular membrane.
What are the meatus
Openings that allow contact between the sinuses and nasal cavity
What are sinuses
Regions in the skull that are full of air
What are the 4 sinues?
Frontal, ethmoid, sphenoid an maxilla
Nerve supply of sinuses
Frontal, ethmoid, sphenoid by the opthamic division of NV and maxilla by the maxilla branch of CNV
Blood supply of nose
Superior - The P and A ethmoidal arteries
Inferior - Branches of the palatine arteries
Anterior - Lateral (Branches of facial artery) and medial superior labial arteries)
Posterior - Sphenopalantine
Nerve Supply of Nose
Inferior/Posterior - Maxilla (V2)
Anterior/Superior - Opthalmic (V1)
Refered pain from sinuses
inflammation of sinuses can refer pain to sensory regions on the face related to that Nerve
Nasopharynx componants
Adenoids, Auditory nerve and the salpingopharyngeus muscle to allow pressure to escape from the middle ear
