thyroid & parathyroid anatomy Flashcards
Where does the inferior thyroid artery come off of?
common carotid artery
What does the right recurrent laryngeal n pass around?
the subclavian a to become the inferior laryngeal n.
Where does the left laryngeal n. recur?
around the arch of the aorta
what would happen if theres a lesion of the internal laryngeal n.
loss of sensation above the vocal chords and loss of taste at epiglottis
what would happen if theres a lesion of the external laryngeal n.?
fatigued voice and weak hoarseness
paralysis of laryngeal muscles and inability to lengthen vocal chords
what artery do you need to be aware of when doing a thryoidectomy?
thyroid ima artery
what imaging do you get for a thyroid goiter that is midline?
thyroid scan
which lymphnodes will be positive with cancer?
jugular chain nodes
How many parathyroid glands can there be?
up to 10 usually 4
what do the superior parathyroids arise from?
4th pharyngeal pouch
what do the inferior parathyroids arise from?
3rd pharyngeal pouch
What is the blood supply to the parathyroids?
inferior thyroid artery
What scan you use to look at suscpicious parathyroids?
sestamibi
helps localize
What structure does the thyroid gland move down to get to the anterior mediastinum? Where does it start?
thyroglossal duct
foramen cecum
What is associated with the pyramidal lobe?
it is a remnant of the thyroglossal duct
can cause a thyroglossal duct cyst
need to remove the middle part of the hyoid bone, cyst, cyst tract and pyramidal lobe
