ANAT 216 Lecture Notes - Lecture 21: Hyperglycemia, Somatostatin, Adrenocorticotropic Hormone
13 Oct 2016
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Document Summary
Endocrine system 2 (reading material chapter 19: pages 512-522) Blood supply: superior thyroid artery (branch of external carotid artery) inferior thyroid artery ( branch of the subclavian arteries) Blood drainage: superior and middle thyroid veins (drains into the internal jugular veins) inferior thyroid vein (drains into the brachiocephalic veins) Stored in cavity thyral globulin: synthesized and secreted by follicular cells, contains thryone* When iodine added it is converted to hormones follicular cells produce thyroglobulin follicular cells stimulated by tsh ingested colloid containing t3 and. T4 and releases through basal membrane to outside follicle: goes into blood vessels. Blood supply is between follicles thyroid hormones: thyroxine (t4) triiodothyronine (t3: functions of thyroid hormones: increases rate of cellular metabolism and oxygen consumption. Plays a role in tissue growth and development: parafollicular or c cells: location, size. Sometimes by itself in tissue between follicles.
