What is inferior thyroid?
What is inferior thyroid?
The inferior thyroid artery is an artery in the neck. It arises from the thyrocervical trunk and passes upward, in front of the vertebral artery and longus colli muscle.
What does inferior thyroid artery supply?
The inferior thyroid artery is considered the principal blood supplier of the thyroid gland. The ITA gives rise to the ascending cervical artery, the inferior laryngeal artery, and also gives pharyngeal, tracheal, and esophageal branches. Also of importance, the ITA supplies the four parathyroid glands.
Are there two inferior thyroid arteries?
It also supplies the four parathyroid glands, which regulate calcium levels in the body, and some neck muscles and structures that help you breathe, speak, and swallow. You have two inferior thyroid arteries—one on either side with generally symmetrical courses.
What is the inferior laryngeal artery?
The inferior laryngeal artery accompanies the recurrent laryngeal nerve into the larynx, where it anastomoses with the superior laryngeal artery to supply the muscles and mucous membranes of the larynx 1.
How many inferior thyroid veins are there?
Anatomical Parts The inferior thyroid veins appear two, frequently three or four, in number, and arise in the venous plexus on the thyroid gland, communicating with the middle and superior thyroid veins.
Where does inferior thyroid artery come from?
Origin. The inferior thyroid artery (Fig. 22.7) arises from the thyrocervical trunk, which branches from the subclavian artery on the pleural dome, in front and a little lateral of the vertebral artery.
Which artery generally gives rise to inferior thyroid artery?
The inferior thyroid artery (Fig. 22.7) arises from the thyrocervical trunk, which branches from the subclavian artery on the pleural dome, in front and a little lateral of the vertebral artery.
Where does the inferior thyroid artery originate from?
Where do inferior thyroid veins drain?
The inferior thyroid veins are many and they drain into the subclavian or brachiocephalic veins.
Where does the inferior thyroid artery originate?
What nerve runs with inferior thyroid artery?
The right recurrent laryngeal nerve arises from in front of the subclavian artery. It then ascends alongside the trachea posterior to the common carotid artery. At the inferior pole of the thyroid gland, the recurrent laryngeal nerve is closely related to the inferior thyroid artery.
How many thyroid veins are there?
There are 3 main pairs of veins which drain the thyroid gland. The superior thyroid veins drain the upper part of the thyroid gland, the middle thyroid veins drain the central parts of the thyroid gland and the inferior thyroid veins drain the lower part of the thyroid gland.
Where are the inferior and superior thyroid veins located?
The inferior thyroid veins appear two, frequently three or four, in number, and arise in the venous plexus on the thyroid gland, communicating with the middle and superior thyroid veins. While the superior and middle thyroid veins serve as direct tributaries to the internal jugular vein,…
Where does thyroidea ima come from in the body?
Thyroidea ima arises from any one of the following sources: aortic arch, brachiocephalic trunk, common carotid, internal thoracic, pericardiacophrenic, subclavian, thyrocervical trunk, inferior thyroid, or transverse scapular artery. It usually but not always arises from the right side.
Where does the inferior thyroid artery supply the pharynx?
The pharyngeal branches of the inferior thyroid artery supply the pharynx . The glandular branches of the inferior thyroid artery are small branches which directly supply the thyroid gland . The relationship between the recurrent laryngeal nerve and inferior thyroid artery is highly variable.
What happens if you Ligat the inferior thyroid artery?
This makes it vulnerable to injury during surgery that involves ligating the inferior thyroid artery, such as excision of the lower pole of the thyroid gland. Also as the parathyroid is mainly supplied by inferior thyroid artery accidental ligation during thyroidectomy can cause hypoparathyroidism.