HLSC 1F90 Lecture Notes - Lecture 20: Thyrotropin-Releasing Hormone, Endoplasmic Reticulum, G Protein–Coupled Receptor
31 Mar 2016
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Paracrine- one step over- cell a to cell b, going next door- neurotransmitters. Hormones: protein: insulin, amine: thyroyine, steroid: cortisol. Need iodine- this can be stored for 2-3 months. Making t4/3 starts with the hypothalamus (control system) if not the hypo- it is the pituitary gland. Hypothalamus releases thyroid releasing hormone (trh), this goes to your anti-pituitary (secreting hormone) The pituitary gland, located at the base of the brain, produces thyroid stimulating hormone (tsh) The hypothalamus, a small part of the brain above the pituitary, produces thyrotropin-releasing hormone (trh). First association of endocrine structure and function was probably the link between the tests and male sexuality. Chemical messengers secreted into the blood by specialized cells. Responsible for many functions we think of as long term. Act in three basic ways (1) by controlling the rates of enzymatic reactions, (2) by controlling the transport of ions or molecule"s across cell membranes, (3) by controlling gene expressions and the synthesis of proteins.
