Some Endocrine Glands

SOME ENDOCRINE GLANDS

Pineal Gland

Synthesizes Melatonin responsible for biological clock

Thyroid Gland

For metabolism Thyroxine (T4) Triiothyronine (T3) Calcitonin

Parathyroid Gland

Behind thyroid gland Generally found as 4 glands Secretes parathyroid hormone Essential for calcium and phosphate regulation

Thymus

 Inferior to thyroid gland Undergoes atrophy during adulthood Secretes thymosine

Heart

Secretes the hormone: Naturetic Peptide Decreases blood pressure

Digestive Tract

Produces many hormones: Gastrin, Secretin Somatostatin, CKK, GIP, VIP, etc.

Pancreas

Insulin to decrease blood pressure Glucagon to increase blood pressure

Diabetes Type I: depleted insulin levels Type II: low insulin levels High glucose levels

Kidneys

Erythropoietin for RBC production in bone marrow Calcitriol

Adrenal Glands

Adrenal Cortex Outer part Cortisol for stress Aldosterone for sodium reabsorption and potassium secretion in kidneys

Adrenal Medulla Middle part Adrenaline (epinephrine) Noradrenaline (norepinephrine) For fight-flight response

Adipose Tissue

Secretes leptin Important for fat metobolism

Gonads

Testis Androgens - testosterone Promotes male characteristics & sperm production

Ovaries Estrogen & Progestrone Female characteristics & egg production