內分泌系統-7.

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Presentation transcript:

內分泌系統-7

甲狀腺與副甲狀腺 Thyroid and Parathyroid Glands Thyroid gland located just below the larynx. Thyroid is the largest of the pure endocrine glands. Follicular cells secrete thyroxine. Parafollicular cells secrete calcitonin.

甲狀腺激素的製造與作用 Production and Action of Thyroid Hormones

T3 Effects Stimulates cellular respiration by: Production of uncoupling proteins. Stimulate active transport Na+/ K+ pumps. Lower cellular [ATP]. Increases metabolic heat. Increases metabolic rate. Stimulates increased consumption of glucose, fatty acids and other molecules.

Diseases of the Thyroid

副甲狀腺 Parathyroid Glands Parathyroid glands embedded in the lateral lobes of the thyroid gland. Only hormone secreted by the parathyroid glands. Single most important hormone in the control of plasma Ca++ concentration. Stimulated by decreased plasma Ca++ concentration.