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The human endocrine system is made up of a number of glands that release hormones into the blood.

Pituitary gland. Many vertebrates, including human beings, have a complex chemical coordination system called the endocrine system. Thyroid gland. Adrenal glands. The human endocrine system is made up of a number of glands that release hormones into the blood. Pancreas. Ovaries. Testicles.

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The human endocrine system is made up of a number of glands that release hormones into the blood.

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  1. Pituitary gland • Many vertebrates, including human beings, have a complex chemical coordination system called the endocrine system. Thyroid gland Adrenal glands • The human endocrine system is made up of a number of glands that release hormones into the blood. Pancreas Ovaries Testicles • Each hormone is a chemical messenger that reaches a particular effector organ and triggers a response.

  2. Pituitary gland • Many vertebrates including human beings, have a complex chemical coordination system called the endocrine system. Thyroid gland Adrenal glands • The human endocrine system is made up of a number of glands that release hormones into the blood. Pancreas Ovaries Testicles • Each hormone is a chemical messenger that reaches a particular effector organ and triggers a response. Click on the gland names to find out how their hormones work.

  3. PITUITARY GLAND A small gland found at the base of the brain. Hormones it produces: • Growth hormone. Stimulates the growth of bones and muscles until maturity. • Prolactin. Stimulates the production of milk in the mammary glands after women give birth. • TSH (thyroid-stimulating hormone). Regulates the production of hormones in the thyroid. • FSH (follicle-stimulating hormone). Stimulates the production of eggs in the ovaries. • LH (luteinizing hormone). Stimulates ovulation in women and production of testosterone (the male sex hormone) in men. Go back to the Start menu

  4. THYROID GLAND An H-shaped gland found in the neck (at the top of the windpipe). Hormones it produces: •Thyroxine. This hormone causes an increase in the chemical activity of the cells in many of organs. It stimulates our bodies’ metabolism of carbohydrates and fats, consuming oxygen and breaking down proteins inside cells. Thyroid gland Go back to the Start menu

  5. ADRENAL GLANDS The adrenal glands sit on top of the kidneys. Adrenal glands Hormones they produce: • Adrenalin.It increases blood sugar levels, blood pressure and heart rate, preparing our bodies for action in situations in which we are alert or in danger. • Cortisol.This hormone is produced as a response to stress. It regulates the processes of producing and breaking down proteins and sugars in cells. Go back to the Start menu

  6. PANCREAS This is a mixed gland: It is both an exocrine and an endocrine gland. Hormones it produces: • Insulin. This hormone causes a drop in blood sugar levels, making cells take up glucose from the blood. • Glucagon.This hormone causes an increase in blood sugar levels, making cells release glucose into the bloodstream. Go back to the Start menu

  7. TESTICLES Hormones they produce: • Testosterone. This is the male sex hormone, which promotes male sexual characteristics and triggers sperm development. Testicles Go back to the Start menu

  8. OVARIES Ovaries Hormones they produce: •Estrogen and progesterone. These are female sex hormones that cause the development of secondary female characteristics and prepare a woman’s body for possible pregnancy. Go back to the Start menu

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