Endocrine System

The Endocrine System consists of: that secrete GlandsHormones

Hormone Is a chemical messenger released into the bloodstream. Is a chemical messenger released into the bloodstream. (They control many body activities)

Gland An organ or a group of cells that secretes hormones. An organ or a group of cells that secretes hormones.

Pituitary Gland The gland that controls other glands. (The Master Gland) The gland that controls other glands. (The Master Gland) It controls growth of bones and movement of smooth muscles. It controls growth of bones and movement of smooth muscles. Found in the brain Found in the brain

Thyroid Gland Produces THYROXIN – Produces THYROXIN – a hormone that controls METABOLISM. (Metabolism is the rate at which food is converted to energy in cells).

Thyroxin Too Little Causes: * Low Metabolism * Tired * Gain Weight Too Much Causes * High Metabolism, * Feel Restless * Lose Weight

Parathyroid Gland Are four that control the amount of calcium and phosphorus in the body. Are four that control the amount of calcium and phosphorus in the body. glands

Adrenal Glands Two glands that control the body’s water balance Two glands that control the body’s water balance Help in the digestive process Help in the digestive process

Adrenal Glands Secrete adrenaline Secrete adrenaline Adrenaline – prepares the body to react under stress or in an emergency.

Pancreas A gland that controls blood sugar levels. A gland that controls blood sugar levels. Releases a hormone called which helps regulate blood sugar levels. Releases a hormone called which helps regulate blood sugar levels. INSULIN

Ovaries Two female reproductive glands that produce egg cells & estrogen. Two female reproductive glands that produce egg cells & estrogen.

Estrogen The female sex hormone that controls development of secondary sex characteristics during puberty. The female sex hormone that controls development of secondary sex characteristics during puberty.

Puberty The stage of growth and development when secondary sex characteristics appear. The stage of growth and development when secondary sex characteristics appear. Females between ages 8 – 15 Females between ages 8 – 15 Males between ages Males between ages

Testes Two male reproductiv e glands that produce sperm cells & testosteron e. Two male reproductiv e glands that produce sperm cells & testosteron e.

Testosterone The male sex hormone that controls the development of the secondary sex characteristics during puberty. The male sex hormone that controls the development of the secondary sex characteristics during puberty.