12 Spaces of the Head and Neck Flashcards
What is the SMAS?
Superficial musculoaponeurotic system
Name the 4 main facial spaces
Mandible and below
Cheek and lateral face
midface
pharyngeal and cervical areas
Name 7 suprahyoid spaces
buccal space masseter space parapharyngeal space carotid space retropharyngeal space prevertebral space
Name 5 infrahyoid spaces
Anterior cervical space Visceral space Carotid space posterior cervical space perivertebral space
Name a space traversing the length of the neck
carotid space
What does the submandibular fascia contain?
submandibular gland
What separates the sublingual and submandibular gland?
myohyoid muscle
What contains the parotid gland?
masticator facia medially and parotid fascia laterally
What separates the infratemporal space and the pterygomandibular space?
lateral pterygoid muscle
There is a space between the temporalis muscle and masseter muscle, what is this divided into?
Superficial temporal space
masseteric space
which artery passes through the infratemporal fossa?
What does it also pass through, and what is it joined by?
maxillary artery
parotid fascia (CN VII)
Into which primary spaces would molar tooth infection spread?
Buccal space
Pterygomandibular space
What separates the buccal space and pterygomandibular spaces?
mandible
Where might infection of the buccal space spread?
submasseteric space
What space is the pterygomandibular space continuous with?
parapharyngeal space
Which cavity is the peritonsilar space
intra-orbital cavity
What protects the pterion?
temporalis
What is the longest intraosseous canal in the body?
Facial canal
how might you divide the supratentorial space?
left supratentorial
right supratentorial
What marks the superior and posterior border of the temporal fossa?
superior temporal line
What marks the inferior border of the temporal fossa?
zygomatic arch
What marks the anterior border of the temporal fossa?
frontal process of zygoma and zygomatic process of frontal bone
What marks the medial border of the temporal fossa?
frontal bone
parietal bone
temporal bone
sphenoid bone
What marks the lateral border of the temporal fossa?
temporal fascia
What muscles are within the temporal fossa?
temporalis
What blood vessel is in the temporal fossa?
superficial temporal artery
Which nerves are in the temporal fossa?
V3 mandibular nerve anterior and posterior branches of deep temporal nerve auriculotemporal nerve zygomatico temporal nerve temporal branches of the facial nerve
What marks the superior border of the infratemporal fossa?
infratemporal surface of greater wing of sphenoid
What marks the inferior border of the infratemporal fossa?
alveolar border of the maxilla
What marks the medial border of the infratemporal fossa?
lateral pterygoid plate
What marks the lateral border of the infratemporal fossa?
there is none lol tricked you xxx
Name 4 nerves in the infratemporal fossa
V3
Inferior alveolar nerve
buccal nerve
lingual nerve
What is the first (main) branch of the maxillary artery?
middle meningeal artery
How does the middle meningeal artery enter the cranium?
foramen spinosum
What are the 2 main deep arteries of the infratemporal fossa?
maxillary middle meningeal (not anterior branch)
What is the main superficial artery of the infratemporal fossa?
superficial temoral artery
What are the main veins of the infratemporal fossa?
maxillary vein
middle meningeal vein
pterygoid venous plexus
Where might an infection of the pterygoid venouos plexus spread to?
cavernous sinus
Which ganglion is near the infratemopral region?
Otic ganglion
Which nerves are affected by a mandibular nerve block?
inferior alveolar
lingual
buccal
auriculotemporal
Roughly where is the pterygopalatine fossa?
lateral to skull posterior to the maxilla
What marks the anterior boundary of the pterygopalatine fossa?
posterior surface of maxilla
What marks the posterior boundary of the pterygopalatine fossa?
pterygoid process
What marks the medial boundary of the pterygopalatine fossa?
perpendicular plate of the palatine bone
What marks the lateral boundary of the pterygopalatine fossa?
pterygomaxillary fissure
How does the pterygopalatine fossa communicate with the infratemporal fossa?
pterygomaxillary fissure
How does the pterygopalatine fossa communicate with the middle cranial fossa?
via foramen rotundum
How does the pterygopalatine fossa communicate witht eh nasal cavity?
sphenopalatine foramen
How does the pterygopalatine fossa communicate with the orbital cavity?
inferiro orbital fissure
How does the pterygopalatine fossa communicate witht eh palate?
greater palatine canal
How does the pterygopalatine fossa communicate with the nasopharynx?
pharyngeal and pterygoid canals
