Cervical Viscera & Roof of the Neck Flashcards
What are the 6 components of the cervical viscera?
Thyroid & parathyroid glands
larynx & trachea
pharynx & esophagus
what cervical level does the esophagus starts?
C6
What cartilage is deep to thyroid cartilage?
cricoid cartilage
What do the fibers look like for the esophagus?
Longititundal and cross fibers
What connects the right and left lobe of the thyroid gland?
Isthumus
what does the isthumus usually cover?
2-4th tracheal rings, anteriorly
What are the 3 arteries of the thyroid gland?
superior thyroid a
inferior thyroid a
thyroid ima (inferior mesenteric artery) a
what are the 3 veins of the thyroid gland?
superior
middle
inferior
where does the superior thyroid vein drain?
IJV
where does the middle thyroid vein drain?
IJV
where does the inferior thyroid vein drain
brachiocephalic v
whats the range of # of parathyroid glands?
2-6 glands
do the right and left recurrent laryngeal nerves have the same path?
No
right recurrent larygneal nerve path
branch of the vagus
supplies larynx muscles
path: loops under subclavian artery
what happens if you cut both left and right recurrent nerves?
lose your voice
what are the 3 things that are in danger during a thyroidectomy?
parathyroid gland
recurrent and external laryngeal nerves
what results in damage to RLN?
paralysis of most laryngeal mm (voice)
what results in damage to ELN?
paralysis of cricothyroid & inferior pharyngeal constrictor mm.
whats the difference between a high or low tracheotomy?
superior to isthmus vs inferior to isthmus
what is tracheostomy
creation of a stoma…creating a permanent alternative airway
What are the risks of tracheostomy?
Too high, you may hit the isthmus
tOO low, may injure the jugular arch
Easier to cut horizontal or vertically for tracheostomy?
Horizontally, cutting cricoid thyroid membrane
what is a cricothyrotomy
formation of opening in cricothyroid membrane
where can you find cricothyroid membrane?
between cricoid and thyroid cartialage
what are the borders of the throracic
anterior border: manubrium
lateral border: 1st rib
posterior: vertebral bodies
what are the 3 sympathetic ganglia found in cervical region?
superior cervical g
middle cervical g
cervicothoracic g
what rami is myelinated?
white rami: carrying info in
what rami is unmyelinated?
gray rami: carrying out of sympathetic trunk
ANS composed of what?
parasympathetic (CNs & S2-4) sympathetic nerves (T1-L2)
What nerve has all p-symp innervation to neck?
vagus
sympathetic trunk relays what?
sympathetic innervation to neck
ANS controls what function?
visceral functions
what does the thoracic duct drain lymph from?
left upper limb head neck thorax abdomen & LLs
what does the right lympathetic duct drain lymph from?
right upper limb, head, neck, and thorax
what are the 3 branches of thyrocerviacal trunk?
suprascapular artery
transverse cervical artery
inferior thyroid artery
where do the vertebral vessels enter?
transverse foramen of C6 & superior (C1-C6)
what does the vertebral vein drain into?
brachiocephalic vein
what is the medial boundary of SCM triangle?
sternal head of SCM
what is the lateral boundary of SCM triangle?
clavicular head of SCM
what is the inferior border of SCM triangle
clavicle
what are the contents of SCM triangle?
IJV
IJV puncture can happen from what?
insertion of central venous line (catheter)
Subclavian vein puncture can happen from what?
insertion of central venous line
