Endocrine Endocrine SystemSystem

The Endocrine The Endocrine System System consists of:consists of:

that secretethat secrete Glands

HormonesHormones

HormoneHormoneIs a chemical Is a chemical messenger released messenger released into the bloodstream.into the bloodstream.

(They control many (They control many body activities)body activities)

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

Pituitary Pituitary GlandGland

The gland that controls The gland that controls other glands. (The Master other glands. (The Master Gland)Gland)

It controls growth of bones It controls growth of bones and movement of smooth and movement of smooth muscles.muscles.

Found in the brainFound in the brain

Thyroid Thyroid GlandGlandProduces THYROXIN – Produces THYROXIN – a hormone that controls a hormone that controls METABOLISM.METABOLISM.

(Metabolism is the rate at which food is converted to energy in cells).

ThyroxinThyroxinToo Little Too Little Causes:Causes:

* Low MetabolismLow Metabolism* TiredTired* Gain WeightGain Weight

Too Much CausesToo Much Causes* High High Metabolism,Metabolism,

* Feel RestlessFeel Restless* Lose WeightLose Weight

Parathyroid Parathyroid GlandGland

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

glands

Adrenal Adrenal GlandsGlandsTwo glands that Two glands that control the body’s control the body’s water balancewater balance

Help in the Help in the digestive processdigestive process

Adrenal GlandsAdrenal GlandsSecrete adrenalineSecrete adrenalineAdrenaline – prepares the body to react under stress or in an emergency.

PancreasPancreasA gland that controls A gland that controls blood sugar levels. blood sugar levels.

Releases a hormone Releases a hormone called called which helps regulate which helps regulate blood sugar levels. blood sugar levels. INSULININSULIN

OvariesOvariesTwo female Two female

reproductive reproductive glands that glands that produce egg produce egg cells & cells & estrogen.estrogen.

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

PubertyPubertyThe stage of growth and The stage of growth and

development when development when secondary sex characteristics secondary sex characteristics appear.appear.

Females between ages 8 – 15Females between ages 8 – 15Males between ages 12 - 15Males between ages 12 - 15

TestesTestesTwo male Two male reproductive reproductive glands that glands that produce produce sperm cells sperm cells & & testosterone.testosterone.

TestosteronTestosteronee

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