Flashcards in Neck Deck (14):
What is a pyramidal lobe?
extends superior to the isthmus
What are the strap muscles for the thyroid?
What muscle is posterior to the thyroid?
longus colli muscle
Where are parathyroid glands?
posterior aspect of the thyroid, typically not visualized due to small size
What artifact does the trachea give off?
Describe the esophagus..
- target sign
- patient swallowing can help identify the esophagus
What does the thyroid arterial supply come from?
- superior thyroid arteries: branches from ECA
- Inferior thyroid arteries: Branches from thyrocervical trunk
What drains the blood from the thyroid?
- Internal jugular vein via the superior and middle thyroid veins and into the innominate veins via the inferior thyroid veins
What glands regulate thyroid hormones?
- thyroid (T3 and T4)
- Pituitary (Thyroid-stimulating hormone TSH)
- Hypothalmus (Thyrotropin- releasing hormone TRH)
What is TSH?
produced by pituitary to stimulate the thyroid to produce thyroid hormones
- increase in TSH indication for hypothyroidism (Normal levels: 0.3 - 3.0)
What are the serum thyroid hormones?
- T3 (thyroxine)
- T4 (Triidothyronine)
What is the pituitary gland regulated by?
Know about Nodular Thyroid Disease...
- very common
- cancer is determined by FNA