BIO 211 Lecture Notes - Lecture 18: Thyroid, Hyoid Bone, Protein Catabolism
1 Dec 2020
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Document Summary
Gh has widespread effects on the body tissues. Stimulates liver cells to synthesize somatomedins which increase uptake of amino acids and their incorporation into proteins by various tissues. Lipid metabolism increased fat catabolized by adipocytes (protein-sparing effect) provides energy for growing tissues. Bone growth, thickening, and remodeling influenced, especially during childhood and adolescence. The secretion of growth hormone (gh), involves both releasing and inhibiting hormones. This provides a more rapid and precise regulation of gh. Site of maturation of t lymphocytes important in immune defense. Secretes hormones that stimulate development of other lymphatic organs and activity of t-lymphocytes. Composed of two lobes and an isthmus below the larynx. Dark reddish brown color due to rich blood supply. Parafollicular (c or clear) cells secrete calcitonin with rising blood calcium. Usually four glands partially embedded in posterior surface of thyroid gland. Can be found from as high as hyoid bone to as low as aortic arch.
