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Peptide
Insulina, growth hormones, oxytocin’s
Amines
A. Catecholamines→secreted by hypothalamus—>dopamine
Adrenal medulla—> epinephrine
B. Thyroid hormone ((needs iodine)
Steroids
Made firm cholesterol (lipid soluble)
Secreted by:ovaries, testes, placenta—> estrogen, progesterone,testosterone
Adrenal cortex→ cortisol,aldosterone
Eicosandoids
COX