Triangles of Neck Flashcards
Innervation of SCM
CN XI for motor
C2 and 3 for sensory
att to first two ribs
scalenes
funx of scalenes
Bilateral- assist in neck flexion and raise first 2 ribs
innervation of Scalenes
ventral rami of cervicle nerves
Suprahyroid muscles
mylohyoid
digastric
stylohyoid
geniohyoid
Infrahyoid muscle
thyrohyoid
sternothyroid
sternohyoid
omohyoid
neck layers are compartmentalized by what two layers
cervicle fascia: deep and superficial
Where does the superficial cervicle fascia layer lie?
btwn dermis of skin and investing layer of deep cervicle fascia
Where does the playtsma muscle lay?
superficial layer of superficial cervicle fascia
What are the three layers of the deep superficial fascia?
superficial (investing)
Pretracheal
Prevertebral
What layer invests the trapezius and SCM?
The superficial part of the Deep cervicle fascia
Where is the pretracheal layer of deep cervicle fascia limited to?
Anterior part of neck
What are the two divisions of the pretracheal layer?
Visceral and musclular
What does the muscular layer of the pretracheal layer contain?
infrahyoid muscles
What does the visceral layer of the pretracheal layer contain?
thyroid gland trachea and esophagus
What layer is the visceral layer of pretracheal fascia continuous with
buccopharyngeal
thin, posterior lamina of the pretracheal fascia, seperates eso from prevertebral fascia
buccopharyngeal fascia
What nerve lies btween visceral and pretracheal fascia?
recurrent laryngeal
What contributes to the posterior portion of the carotid sheath
prevertebral fascia
What is the anterior lamina called?
alar while the other part continues as the pervertebral fascia
Contents of carotid sheath
Common and internal carotid arteries
the IJV
The vagus nerve
What makes up the carotid sheath
fascial sheath blends anteriorly with investing and pretracheal layers of fascia and posterioly with prevertebral layer of deep cervicle fascia
What blends with the percardium on the heart?
pretracheal fascia
Where does alar and buccopharyngeal fuse and come to a stop?
T1/T2
Once we break through this space we get infection in mediatrium and thorax
retropharngeal
Anterior boundary of retropharyngeal space
buccopharyneal fascia
posterior boundary of retropharnyngeal space
alar or prevertebral fascia
Lateral boundry of retropharyneal space
carotid sheath
Superior boundary of retropharyngeal space
base of skull
Inferior boundary of retropharyngeal space
T1/T2
Where is highest morality rate as far as roots of neck
Root 1
What contains: splenius cap, levator scap, middle scalene, poster scalene and spinal accessory nerve, supraclavicular nerve, transvercervical artery/vein
Occipital triangle : posterier triangle
Contains: subclavian artery, subclavian vein, brachial plexus
Omoclavicular triangle: posterior triangle
What node drains teh ears and parotid region on face?
Superficial cervicle lymph
What drains the occipital and parital regions
superficial lymph nodes
what nodes drain the posterior scalp and neck
occipital nodes
drains the deep 2/3s of neck and head: includes the facial, lingual, retrophranygeal, preauricular, submandibular and submental nodes
Deep group of nodes
drains lower face, gingivae, teeth, tongue then to deep cervicle
submandibular
drain lower lip, chin, floor of mouth, tip of tongue, lower incisor teeth
submental
which nodes eventually recieve all lymp from head and neck?
Deep cervicle nodes
Contains: trachea, great vessels, esophagus, upper mediastium, lung apices, thoracic duct
zone 1
Carotid and vertebral arteries, jugular veins, pharnyx, larnyx, eso and trachea
zone 2
distal to extracranial carotid asa well as segments of jugular veins
zone 3
most danerous zone
1
cancers from thryoid or upper eso end up
omoclavicular triangle
