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Thyroid Hormones
Follicular Cells: Thyroxine T4,T3
Parafollicular Cells: Calcitonin
Follicular Cells: Thyroxine T4,T3 | Stimulated by
TSH
Follicular cells: Thyroxine T4,T3 | Target/Effect
All body Cells
Heart: T3 is permissive for Epinephrine/Norepinephrine
Hypothalamus and Anterior Pituitary negative feedback
Parafollicular Cells: Calcitonin | Stimulated by
↑ Blood Ca2+
Parafollicular Cells: Calcitonin | Target/Effect
Promotes osteoblast from differentiation
Parathyroid Gland hormones
PTH
PTH | Stimulated by
↓ Blood Ca2+
PTH | Target/Effect
Bone: Prevent OB differentiation
Kidneys: ↑ Ca2+ reabsorption, ↑ P Excretion, Activate Vitamin D