neck fascia Flashcards
odontogenic infections
- can spread to cranium and/or mediastinum
- often in retropharyngeal space and danger space
vessels and nerves that pierce the investing layer
- external jugular
- anterior jugular
- cervical plexus branches (lesser occipital, greater auricular, transverse cervical, supraclavicular)
vascular fascial compartment
surrounded by carotid sheath
origin of pretracheal layer superiorly
hyoid bone
what does the buccopharyngeal fascia separate
pharynx and esophagus from prevertebral layer
3 fascial spaces
- pretracheal space
- retropharyngeal space
- fascial space within prevertebral layer
what forms a trochlea (pulley) around the intermediate tendons of the muscles in the neck
pretracheal fascia
two structures surrounding the neck
1) superficial cervical fascia
2) deep cervical fascia
layers of deep cervical fascia
- investing layer
- pretracheal layer
- prevertebral layer
- alar fascia and carotid sheath
potential route for infection
deep cervical fascia (loose CT)
inferior attachments of investing layer
- clavicles
- manubrium of sternum
- spine of scapula and acromion
first fascial compartment
-surrounded by investing layer
visceral fascial compartment
-surrounded by pretracheal layer
super attachments of investing layer
- superior nuchal lines
- mastoid processes
- zygomatic arches
- inferior border of mandible
- hyoid bone
what makes up the carotid sheath
- Internal jugular vein (lateral)
- common carotid artery (medial)
- vagus n (in between)
- deep cervical lymph nodes
fascial space within prevert
- also known as “danger space”
- between alar fascia and prevert layer
- continuous with posterior mediastinum
- goes to diaphragm
vertebral fascial compartment
-area within prevertebral layer
investing layer surrounds which muscles
- scm
- trapezius
- suprahyoid mm
retropharyngeal space
- between buccopharyngeal fascia and alar fascia of prevertebral
- extends to posterior mediastinum
layer of fatty CT under the skin of the neck
superficial cervical fascia
pretracheal space
-between investing layer and pretracheal fascia
muscular part of pretracheal layer encloses what
infrahyoid mm
what layer surrounds the scalene muscles
prevertebral layer
visceral part of pretracheal layer forms a sheath around what?
- larynx and trachea
- pharynx and esophagus
- thyroid gland
posterior part of pretracheal layer
buccopharyngeal fascia
