Root of neck Flashcards
Contents of root of neck? Viscera Structures Arteries Veins Nerves
- Viscera: thyroid gland, parathyroid glands, larynx
- Structures: trachea, esophagus, thoracic duct, right lymphatic duct, lymph nodes
- Arteries: Common carotid, subclavian (brachiocephalic trunk)
- Veins: Internal jugular, subclavian, brachiocephalic vein, external jugular, anterior jugular
- Nerves: Vagus, recurrent laryngeal, phrenic, sympathetic trunk, brachial plexus.
Thyroid cartilage is part of?
larynx
what is larynx?
airway/voice box
Thyroid gland location? Type of Organ? Lots of?
1) Right, left, pyramidal lobes.
2) Isthmus at 2 and 3 tracheal rings
3) SO MUCH BLOOD.
4) Major endocrine organ
what is pyramidal lobe?
extra extension of thyroid tissue
Blood supply to thyroid gland?
1) Inferior BS to thyroid gland is from subclavian subclavian, specifically the thyrocervical trunk (gives off 4 branches, major one is inferior thyroid artery, which supplies the inferior part of the thyroid gland)
2)superior thyroid artery that
comes off of external carotid
What is the Trachea?
- Tracheal rings lead down to carina and bronchi.
* Transmits air
Location of Parathyroid glands?
behind the lobes of thyroid, 2 on each side
*Embedded within the thyroid gland on the posterior side
What is Parathyroid glands?
- 4 glands embedded posteriorly In thyroid gland.
* Calcium regulation
Thoracic Duct location?
left side by venous angle (that is formed by left subclavian and left internal jugular)
What is the Thoracic Duct?
Thoracic duct is lymphatic drainage into venous return
Thoracic Duct dumps into?
the venous angle at junciont of left internal jugular and left subclavian veins *and then carries the lymph into venous circulation
what is cisterna chyli? location? Path of drainaige
most inferior part of thoracic duct
- T12/L1
- From cisterna chyli, the thoracic duct ascends along the right side of the vertebral column, but then eventually will cross over to dump into the left venous angle
Vast majority of lymph drains to the?
left side into the left thoracic duct
Thoracic duct drains everything from?
cisterna chyli down and then everything on the left side above (left thorax, left upper extremity and left head and neck all drain into thoracic duct)
right side of body drainage?
right lymphatic duct drains only the right thorax, the right upper extremity and the right head and neck
what branch off the aorta goes directly to root of neck?
L common carotid
*The right side first bracnhes as to Brachiocephalic trunk to GET to the right side, and then the R common carotid can go to neck root
common carotid arteries
are proximal to arota
spilt into ICA that goes to brain) and ECA
External carotid artery (ECA) goes where? supplies what?
ascends from C4 superiorly, supplying the more superficial structures of the head and anterior neck
*SUPPLES HEAD
landmark for L and R carotid artery bifurcation from common? Corresponds with?
C4, which usually corresponds to the thyroid cartilage
External carotid artery (ECA) pattern?
3-2-2 pattern
*3 anterior branches, 2 terminal branches, and 2 posterior branches
NAme of Anterior branches ECA?
1) superior thyroid artery — superior laryngeal artery
2) lingual artery
3) facial artery