Three pairs of veins provide venous drainage for the thyroid gland (see the image below). The superior thyroid vein ascends along the superior thyroid artery and becomes a tributary of the internal jugular vein. The middle thyroid vein follows a direct course laterally to the internal jugular vein.
How many veins drain the thyroid gland?
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.
How many lobes are present in thyroid?
The thyroid gland is divided into two lobes that are connected by the isthmus, which crosses the midline of the upper trachea at the second and third tracheal rings.
Where is the thyroid vein?
The superior thyroid vein begins in the substance and on the surface of the thyroid gland, by tributaries corresponding with the branches of the superior thyroid artery, and ends in the upper part of the internal jugular vein. It receives the superior laryngeal and cricothyroid veins.
What is superior pole of thyroid?
Rarely in 10% of cases superior thyroid artery may arise directly from common carotid artery 7. Superior thyroid artery passes deep to infrahyoid muscles, and on reach- ing the superior pole of thyroid gland, divides into anterior and posterior branches to supply superior portion of thyroid gland.
How can I check my thyroid at home?
Hold the mirror in your hand, focusing on the lower front area of your neck, above the collarbones, and below the voice box (larynx). Your thyroid gland is located in this area of your neck. While focusing on this area in the mirror, tip your head back. Take a drink of water and swallow.
What level is the thyroid at?
The thyroid is a highly vascular, brownish-red gland located anteriorly in the lower neck, extending from the level of the fifth cervical vertebra down to the first thoracic.
What foods are bad for thyroid?
Which nutrients are harmful?
- soy foods: tofu, tempeh, edamame, etc.
- certain vegetables: cabbage, broccoli, kale, cauliflower, spinach, etc.
- fruits and starchy plants: sweet potatoes, cassava, peaches, strawberries, etc.
- nuts and seeds: millet, pine nuts, peanuts, etc.
Is a thyroid problem serious?
If your body makes too much thyroid hormone, you can develop a condition called hyperthyroidism. If your body makes too little thyroid hormone, it’s called hypothyroidism. Both conditions are serious and need to be treated by your healthcare provider.
What is the main cause of thyroid problems?
Problems with the thyroid can be caused by: iodine deficiency. autoimmune diseases, in which the immune system attacks the thyroid, leading either to hyperthyroidism (caused by Graves’ disease) or hypothyroidism (caused by Hashimoto’s disease) inflammation (which may or may not cause pain), caused by a virus or …
Is Thyroid a vascular?
Vasculature. The thyroid gland secretes hormones directly into the circulation and is highly vascularised.
What are the nerves related to thyroid gland?
Summary The thyroid nerves are mostly postganglionic sympathetic fibres. Most nerves enter the gland through the hila, either as vascular nerve bundles and plexuses, or as independent hilar bundles and fibres. The latter eventually become related to the vessels.
Does the vagus nerve affect the thyroid?
THE nerve supply of the thyroid gland is derived in part from the cervical sympathetic trunks and in part from the vagus nerves. In man, the sympathetic nerves to the thyroid gland arise mainly from the middle cervical ganglion or, in the absence of this ganglion, directly from the cervical sympathetic trunks.
What Hormone Does the thyroid produce?
Topic Overview. The thyroid gland uses iodine from food to make two thyroid hormones: triiodothyronine (T3) and thyroxine (T4). It also stores these thyroid hormones and releases them as they are needed. The hypothalamus and the pituitary gland, which are located in the brain, help control the thyroid gland.
Is the thyroid in the lymphatic system?
The thyroid lymph nodes are deep anterior cervical lymph nodes found near the thyroid gland on the neck. This article related to the lymphatic system is a stub. You can help Wikipedia by expanding it.