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14 cze 2023 · The thyroid gland is an endocrine organ located in the neck that participates in a myriad of systemic processes. The effects of the hormones it produces can be seen throughout all systems in the body. Thyroid hormones are able to diffuse freely across cell membranes.
- Hyperthyroidism
Anatomy. The thyroid gland is an endocrine organ consisting...
- Hashimoto’s Thyroiditis
Lymphocyte cells collect on the gland and start to produce...
- Menorrhagia
Menorrhagia Author: Shahab Shahid, MBBS • Reviewer: Uruj...
- Inferior Thyroid Veins
The inferior thyroid vein is a paired vein located in the...
- Parathyroid Glands
The parathyroid glands are four small circular glandular...
- Pharyngeal Arch
The pharyngeal arches appear in the fourth week of...
- Organelles
Its functions vary among cell types. For example, sER in...
- Nucleus
The cell nucleus is the most noticeable organelle within the...
- Hyperthyroidism
3 sie 2023 · The thyroid gland is an endocrine gland that occurs in the neck and is essential for iodine metabolism and secretion of thyroid hormones. The gland is small and highly vascular, like most endocrine glands. It occurs in the neck between the 5th, 6th, and 7th cervical vertebrae.
Like the adrenal cortex and the gonads, the thyroid gland is controlled by hormone secretions from the hypothalamo-pituitary axis. The synthesis and secretion of TSH from the thyrotrophs is stimulated by the tripeptide, thyrotrophin-releasing hormone (TRH).
13 mar 2023 · The thyroid is an endocrine gland. Its location is in the inferior, anterior neck, and it is responsible for the formation and secretion of thyroid hormones as well as iodine homeostasis within the human body. The thyroid produces approximately 90% inactive thyroid hormone, or thyroxine (T4), and 10% active thyroid hormone, or triiodothyronine ...
5 cze 2023 · The thyroid hormone is well known for controlling metabolism, growth, and many other bodily functions. The thyroid gland, anterior pituitary gland, and hypothalamus comprise a self-regulatory circuit called the hypothalamic-pituitary-thyroid axis.
30 paź 2023 · The thyroid gland is a bilobular endocrine gland that is found in the neck, anterior and inferior to the larynx. Grossly, the gland appears brownish-red and the left and right lobes are connected by an isthmus. The main purpose of this organ is to produce, store and secrete the iodine-based hormones triiodothyronine (T3) and thyroxine (T4).
Follicular cells in the gland produce the 2 main thyroid hormones: Tetraiodothyronine (thyroxine, T4) Triiodothyronine (T3) These hormones act on cells in virtually every body tissue by combining with nuclear receptors and altering expression of a wide range of gene products.
