Fascial Compartments Flashcards
what are the boundaries of the superficial fascial space?
skin/superficial fascia of the face
zygomatic arch (infraorbital margin)
lower border of the mandible
parotid gland
what are the contents of the superficial fascial space?
muscles of facial expression
facial artery and vein
infraorbital artery, vein and nerve
mental artery, vein and nerve
branches of facial nerve
what are the boundaries of the parotid fascial space and its contents?
parotid gland capsule
parotid gland, facial nerve, external carotid artery and retromandibular vein
what are the deep fascial spaces?
masticator space
sublingual space
submandibular space
submental space
parapharyngeal space
what is the difference between the interfascial space and intrafascial space?
INTER is between facial boundary areas and readily communicates with other fascial spaces
INTRA is enclosed by fascia and does not readily communicate with other fascial spaces
what muscle separates the submandibular and sublingual space?
mylohyoid
what are the contents of the masticator space?
ramus of the mandible and TMJ
4 muscles of mastication
mandibular division of trigeminal (V3)
chorda tympani (branch of CN VII)
maxillary artery and vein (including pterygoid plexus)
what are the contents of the parapharyngeal space?
fat
deep cervical lymph nodes
where can an infection in the masticator space spread?
medially (oral cavity) or laterally
what can a tumor in the parapharyngeal space cause?
- lateral pterygoid: issues opening jaw
- closing off torus tubarius (air pressure)
- obliterate some of the nasal cavity causing difficulties breathing
infections in the retropharyngeal space can cause what?
infections in the pharynx or to thorax
what is the confluence of spaces?
the merger of the parapharyngeal, sublingual and submandibular compartments
what is the relationship of mandibular teeth root apices to the myohyoid line?
submandibular facial space contains the apices of the posterior teeth (molars) located inferior to the myohyoid line
sublingual facial space contains the apices of anterior teeth located superior to the mylohyoid line
a submandibular space infection caused by medial erosion of a periapical abscess of a posterior mandibular tooth can cause what?
- elevation and displacement of tongue to opposite side
- swelling in suprahyoid region of neck (beneath chin and body of mandible)
what is ludwig’s angina?
bilateral infection in sublingual and submandibular fascial spaces
