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Posterior Cervical Triangle
Angular dude
84
Anatomy
Graduate
09/19/2014

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Term
5 features of the surface anatomy of the posterior cervical triangle
Definition
platysma muscle, sternoclediomastiod, jugular notch, suprasternal space, subclavian triangle
Term
subcutaneous feature of the surface anatomy of the posterior cervical triangle
Definition
platysma muscle
Term
sternocleidomastiod origin
Definition
sternum and clavicle
Term
sternoclediomastiod insertion
Definition
mastoid process
Term
the jugular notch is located on the
Definition
manubrium
Term
the jugular notch is located on the manubrium between what
Definition
heads of the sternoclediomastoid
Term
the subclavian triangle
Definition
between the trapezius and SCM over the clavicle
Term
pulse palpation of the subclavian artery is felt where
Definition
subclavian triangle
Term
what are the palpable skeletal features of the regional anatomy of the neck? (6)
Definition
hyoid bone, transverse process of atlas, inferior border of mandible, vertebra promninens, laryngeal prominience at level of C4, cricoid cartilage at level of C6
Term
fascial compartments of posterior cervical triangle: the neck is organized as ______ within a ______
Definition
tubes, tube
Term
what does the superficial fascia of the neck contain
Definition
plastysma muscle
Term
the platysma muscle is innervated by what
Definition
facial nerve
Term
the investing layer of deep fascia of the neck contains what muscles
Definition
trapezius and sternocleidomastoid
Term
the prevertebral fascia of the neck contains what structures?
Definition
cervical vertebral column, back muscles
Term
the pretracheal fascia of the neck contains what structures (5)
Definition
trachea, larynx, esophagus, thyroid gl, infrahyoid mm
Term
the carotid sheath of the neck contains what structures (3)
Definition
common carotid aa, internal jugular vv, vagus nn
Term
what are the anatomical regions of the neck (3)
Definition
suboccipital region, posterior cervical triangle, anterior cervical triangle
Term
What are teh boundaries of teh posterior cervical triangle of the neck
Definition
sterncleidomastoid and trapezius mm, clvicle
Term
the posterior cervical triangle of the neck extends from these fascial compartments
Definition
investing layer of deep fascia to fascial carpet
Term
what is the fascial carpet
Definition
lateral extension of prevertebral fascia
Term
THe subdivisions of the posterior cervical triangle are known as what
Definition
carefree and careful
Term
The carefree and careful zones are defined by what?
Definition
spinal accessory nerve
Term
What structure defines the subclavian triangle within the posterior cervical triangle?
Definition
omohyoid
Term
THe subclavian triangle contains what structures?
Definition
subclavian aa and subclavian vv
Term
THe sternoclediomastoid separates what
Definition
anterior and posterior triangles
Term
The sternocleidomastiod is between what structures
Definition
external and internal jugular vv
Term
the sternoclediomastoid protests what
Definition
carotid sheath
Term
what is the sternoclediomastiod innervated by
Definition
spinal accessory nerve and C2, C3
Term
actions of the SCM
Definition
flexion of head, ipsiltaeral flexion, contralateral rotation alone
Term
congenital fibrosus of SCM on one side causes a condition called what
Definition
Torticollis
Term
torticollis
Definition
wryneck
Term
what are the 6 superficial nerves of the posterior cervical triangle?
Definition
lesser occipital, greater auricular, transverse cervical, medial/intermediate/lateral supraclavicular nn
Term
The superficial nerves of the posterior cervical triangle are all supplied by what
Definition
cutaneous sensory ant. primary rami of cervical plexus
Term
What are the 3 superficial nerves that go up
Definition
lesser occipital, greater auricular, transverse cervical
Term
what nerve level feeds the lesser occipital nerve
Definition
C2
Term
The greater auricular nerve is supplied by what nerve levels
Definition
C2, C3
Term
What nerve levels supply the transverse cervical nerve?
Definition
C2, C3
Term
What path does the lesser occipital nerve take
Definition
follow posterior border of SCM to supply scalp behind ear
Term
What path does the great auricular n take?
Definition
vertically across SCM to supply skin around external ear
Term
What path does the transverse cervical n take
Definition
horizontally across SCM to supply skin of anterior neck
Term
What are the 3 superficial nerves of the posterior cervical triangle that go down
Definition
medial, intermediate, lateral supraclavicular n
Term
The medial, intermediate, lateral supraclavicular nerve is fed by what spinal level
Definition
c3, c4
Term
The medial, intermediate, lateral supraclavicular n takes what path
Definition
pierces platysma to supply skin inferior to clavicle
Term
The external jugular v cross what structure while being parallel to the greater auricular n
Definition
SCM
Term
The external jugular v crosses the SCM while being parallel to what structure
Definition
auricular n
Term
THe external jugular v carries superficial head drainage to where
Definition
subclavian v
Term
What are the 7 muscles of the post cervical triangle
Definition
omohyoid, scalenus anterior, scalenus medius, scalenus posterior, subclavius, splenius, levator scapulae
Term
THe omohyoid is innervated by what
Definition
ansa cervicalis
Term
What nerve levels innervate ansa cerivalis
Definition
C 1-3
Term
omohyoid origin
Definition
superior border of scapula
Term
omohyoid insertion
Definition
intermediate tendon to the clavicle
Term
Scalenes origin
Definition
transverse processes of cervical vertebrae
Term
scalenus anterior, medius insertion
Definition
first rib
Term
scalenus posterior insertion
Definition
second rib
Term
THe scalenes are innervated by what
Definition
anterior primary rami of cervical n
Term
actions of scalenes
Definition
accessory respiratory muscle, flexors and contralateral rotatores of neck
Term
location of splenius capitis and levator scapulae
Definition
superior and posterior to scalenus medius within post cervical triangle
Term
What are the 5 deep nerves of the post cerv triangle
Definition
spinal accessory n, phrenic n, brachial plexus, suprascapular, dorsal scapular
Term
THe spinal accessory n supplies what muscles
Definition
trapezius, sternoclediomastoid
Term
WHat is the spinal root for the spinal accessory n
Definition
c1-c5
Term
The cranial root of the spinal accessory n innervates what structures w/ the vagus n
Definition
larynx, pharynx
Term
THe phrenic n comes from what spinal level
Definition
c3-c5
Term
What is the motor nerve of the diaphragm
Definition
phrneic n
Term
the phrenic n cross what muscle
Definition
ant. scalene
Term
The brachial plexus has what spinal levels
Definition
c5-t1
Term
the roots and trunks of the brachila plexus emerge between what muscles
Definition
scalenus ant. & mid
Term
THe superior, middle, inferior trunks of the brachial plexus are located superior to what
Definition
clavicle
Term
THe suprascapular n is fed by what spinal level
Definition
c4-c6
Term
THe suprascapular nn comes from what
Definition
trunks of brachial plexus, lateral to brachial plexus
Term
the dorsal scapular n comes from what spinal level
Definition
c4-c5
Term
teh dorsal scapular n enters what muscle
Definition
levator scapulae
Term
the subclavian a becomes what?
Definition
axillary a
Term
the subclavian aa is found deep to what
Definition
clavicle in subclavian triangle
Term
what is an important branch of the subclavian artery
Definition
thyrocervical trunk
Term
path of the subclavian artery
Definition
passes behind scalene ant to lateral border of rib 1
Term
what are the 3 branches of the thyrocervical trunk
Definition
suprascapular aa, transverse cervical aa, dorsal scapular aa
Term
the suprascapular aa supplies what muscle
Definition
supraspinatus, infraspinatus muscle
Term
suprascapular aa path
Definition
passes deep to clavicle form thyrocervical trunk posteriorly
Term
transverse cervical aa path
Definition
passes superior to clavicle (deep to omohyoid) posteriorly
Term
transverse cervical aa feeds what muscle
Definition
trapezius
Term
the dorsal scapular aa supplies what muscles
Definition
rhomboids and levator scapulae
Term
subclavian vv path
Definition
passes superficial to scalene ant
Term
Thoracic outlet syndrome
Definition
anything that puts pressure on the structures of the post cervical triangle
Term
Limb development begins when
Definition
4th week
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