Neck Flashcards
Describe the anterior and posterior boundaries of the neck
Ant: lower border of madible -> manubrium
Post: Superior nuchael line (C7) - T1
What are the contents of the neck?
oesphagus
larynxthyroid cartilage
trachae
What structures are all found at CN 3/4?
carotid bification + sinus
Mandible
pharynx and larynx
Which goes to lungs pharynx or larynx?
Larynx
L for lungs
Which is the visceral fascia of neck?
pretrachael
what mm is contain in superficial fascia?
platysma
Where is the investing fascia?
below superfical but contains the whole neck
What travels through the 2 carotid sheaths?
common and internal carotid
CN X
Internal jugular
What is in the prevertebral fascia?
mm. attaching to vertebrae
What is the only hyoid muscle found in posterior of neck?
omohyoid
What mm found in post neck
omohyoid
splenius captiis
levator scapulae
Scalenes
what vein is found in post neck?
ext jug
nerves of posterior neck?
brachial plexus and CN XI
What mm seperates borders of neck?
SCM
What mm are in anterio neck
supra and infra hyoid
EXCEPT MYOHYOID
what arteries are in anterior neck?
common and int carotid
What nerves travel in anterior neck?
CN VII CN IX CN X (pharyn- and laryngeal branches) CN XI CN XII
Name the 4 suprhyoid muscles
Digastric (post and ant)
Stylohoid
Myohyloid
Geniohyoid
Whats the anagram for suprahyoid mm.?
SUPRA
Super
Man
Defends
Globe
Name the innervation of the Supra hyoid muscles
Digastric ANT : CN V, 3 DIGASTRIC POST : CN VII Stylohyoid: CN VII Mylohyoid: CN V 3 Geniohyoid: CN XII via C1 branch
State the muscles innervated by CN V 3 and their functions
Digastric ant : lower mandible and raise hyoid
Mylohoid: elevate hyoid
Stylohyoid innervation and function
CN VII pulls hyoid back
What is special about the geniohyoid function and innervation
innervated by C1 branching from CN XII
will pull hyoid forward when mandible fixed and pull mandible down when hyoid is FLEXED.
Infra hyoid neumonic
Thieving
Scum
Only
Scared
name the 4 infra hyoid muscles
Omohyoid
Sternothyroid
Thryohyoid
Sternohyoid
Which mm are innervated by C1-C3 Ansa cervicalis (C2-C3)
SOS
Sternothyroid
Omohyoid
Sternohyoid
Which is innervated by c1 branch of CN XII
throhoid
What is function of sternohyoid?
depresses hyoid after swallowing
what is function of omohyoid?
Depresses and fixes hyoid
What is function of thyrohoid?
Depresses and fixes hyoid, raises larynx (out of way) durring swallowing
PREVENTS FOOD FROM ENTERING LARYNX
Sternotyhroid function?
draws larynx down
describe path of superior thyroid artery?
branch and DESCEND to thyroid
Describe path of facial artery
Distinct contorted pathway
Where does internal carotid innervate in brain?
Anterior and middle
describe pathway branches of external carotid from ascending order
Superior thyroid Ascending pharyngeal (seen more lateral) Lingual Facial Posterior Auricular Maxillary Superior Temporal
External carotid branches pnemonic
Some Times Andy Parsons Likes Freaking Pensionor Angus Many Subsquential Times
Describe the 2 venous drainage pathways of the neck
Temporal, maxillary -> external jug -> subclave
Facial -> Internal jugular -> subclavian
where do both jugular veins drain to?
subclavian
what divided the two jugular veins?
SCM
CN VII will leave the stylo mastoid foramen and innervate what Mm immediatly?
Stylohyoid and post digastric
Stylopharyngeus is innervated by which nerve?
CN IX
which tongue muscles isnt innervated by CN XII?
platoglossus
which two cranial nerves have a sensory input to the cartoid sinus?
CN IX and X
What innervates Splenius capitus
post rami C2-3
What innervates scalenes?
ant rami : C3-7
What innervates elvator scaplae?
C3-4
What innervates inferior belly of omohyoid?
Ansa cervicalis.
