Endocrine System

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Endocrine System

• Made up of its glands and hormones
• The glands are called ductless
• The release hormones directly into the blood
  stream

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• The blood stream transports hormones throughout
  the body.
• Each hormone acts on a certain type of tissue
  called its target tissue.

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Pituitary

• Location Base of Brain
• Hormone Growth hormone
• Function stimulates the elongation of bones in
  the body.

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Hypothalamus

• Controls the pituitary gland
• Receives information from the nervous system

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Thymus

• Helps develop the immune system

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Parathyroid

• Location embedded in back of thyroid gland.
• Hormone Parathormone
• Function Controls the metabolism of calcium

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Adrenal Gland

• Location on top of kidney
• Hormone Adrenaline
• Function Raises blood sugar level and increases
  heart beat and breathing rates.

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Islets of lagerphones

• Location Pancreas
• Hormones Insulin
• Function Stimulates glucose uptake by cells.
• Hormone Glucagon
• Function Promote conversion (change of glycogen
  to glucose)

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Ovarys

• Hormone estrogen
• Function Help develop secondary characteristics
  in females.

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The Testes

• The testes secrete male sex hormones called
  androgens.
• Testosterone is an androgen that affects the
  secondary characteristics in men.

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Thyroid Gland

• Located in the neck in front of the trachea
• Thyroid gland releases the hormone thyroxine.
• Function regulates the rate of metabolism.

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Goiter

• Not enough iodine in the diet (iodine defiance)
• Causes swelling of the thyroid gland

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Goiter
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Diabetes

• Undersecretion of insulin.
• High blood sugar

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Gigantism
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Gigantism

• 12 year old boy
• Measure 6-5
• Oversecreation of growth hormone
• Occurs during childhood

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• Tallest man 8 feet 11 inches.

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• At 7'4" and 500 pounds, Andre the Giant could
  have been famous for his size alone. His drive,
  talent and ambition, however, proved to be as big
  as Andre himself, and the wrestler became
  legendary for his achievements in and out of the
  ring.

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Acromegaly

• Occurs in adults
• Bones of hands face and feet are enlarged
• Do to the release of growth hormone.

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Dwarfism

• Under secretion of growth hormone during
  childhood.

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