FINALS: Nose Flashcards
The external nose is attached to the forehead by
Nasal bridge or root
Nose is made up of
External nose
Nasal cavity
External nose is bounded by the _____ medially
Nasal septum
External nose is bounded by _____ laterally
Ala
Superior portion of the external framework of nose
Nasal bone
Frontal process of maxilla
Nasal part of frontal bone
Inferior portion of the external framework of nose
Plates or hyaline cartilages
Septal cartilage
Upper nasal cartilage
Lower nasal cartilage
Nasal cavity
Infront:
Behind:
Infront of nostrils
Behind choanae
Divides the nasal cavity into right and left halves
Nasal septum
Each half of the nasal cavity consists of
Floor
Roof
Lateral wall
Medial wall
Floor is formed by : 2
Palatine process of maxilla
Horizontal plate of palatine bone
Roof formed by : 4
Body of sphenoid
Nasal bone and nasal cartilages
Cribriform plate of ethmoid bone
Frontal bone
Located on the roof of the nasal cavity
Contains olfactory bulb and nerve to provide sense of smell
Olfactory membrane
Projections on the lateral wall : 3
Superior middle inferior conchae
Spaces below each conchae
Meatus
Superior to the superior concha
Receives: sphenoidal sinus
Sphenoethmoidal recess
Inf to sup conchae
Receives: posterior ethmoidal sinus
Superior meatus
Inf to middle conchae
Middle meatus
A curved cleft below the Bulla
Leads to: maxillary sinus
Hiatus semilunaris
Funnel shaped channel
Receives: frontal and ant ethmoidal sinus
Infundibulum
Openings in the middle meatus
Hiatus semilunaris
Infundibulum
Openngs in the middle meatus leads to what sinuses 3
Frontal
Ant ethmoidal
Maxillary
Inf to inf conchae
Receives: opening of nasolacrimal
Inferior meatus
An osteocartilaginous partition
Medial wall or nasal septum
Medial wall is composed of : 3
Sup: vertical plate of ethmoid
Post: vomer
Ant: septal cartilage
Lines the nasal cavity
Mucous membrane
2 types of mucous membrane
Olfactory
Respiratory
Parts lined with olfactory m. Memb
Upper surface of superior concha
Sphenoethmoidal recess
Nasal septum
Roof
Function of olfactory m memb
Reception of olfactory stimuli
Lines lower part of nasal cavity
Warm, moisten and clean the inspired area
Respiratory mucous memb
Major nerve supply of nasal cavity 3
Olfactory nerve
Ophthalmic and max branch of trigeminal nerve
Anterior ethmoidal nerve
Ascend through the cribriform plate to reach the olfactory bulbs
Olfactory nerve
Nerve supply for ordinary sensation
Ophthalmic and max branch
Nerve supply to the anterior part of nasal cavity
Ant ethmoidal nerve
Nerve supply to the posterior part of nasal cavity
Nasal, nasopalatine, palatine branches of the pterygopalatine ganglion
Blood supply of nasal cavity
Branches of maxillary artery
Common site of blleding from the nose or epistaxis
Sphenopalatine artery
Lymph drainage of nasal cavity
Submandibular nodes
Upper deep cervical nodes
