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The Endocrine System
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The Endocrine System. The Endocrine System are the glands that secrete hormones into the bloodstream.

Dec 27, 2015

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Earl Lester
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Page 1: The Endocrine System. The Endocrine System are the glands that secrete hormones into the bloodstream.

The Endocrine System

Page 2: The Endocrine System. The Endocrine System are the glands that secrete hormones into the bloodstream.
Page 3: The Endocrine System. The Endocrine System are the glands that secrete hormones into the bloodstream.

•The Endocrine System are the glands that secrete hormones into the bloodstream

Page 4: The Endocrine System. The Endocrine System are the glands that secrete hormones into the bloodstream.

Endocrine System

• One of the body’s two communication systems–Nervous and endocrine

• A set of glands that produce hormones-- chemical messengers that circulate in the blood

Page 5: The Endocrine System. The Endocrine System are the glands that secrete hormones into the bloodstream.

Hormone• Chemical messengers produced by

the endocrine glands and circulated in the blood

• Similar to neurotransmitters in that they are also messengers

• Slower communication system, but with longer lasting effects

Page 6: The Endocrine System. The Endocrine System are the glands that secrete hormones into the bloodstream.

Endocrine System

Page 7: The Endocrine System. The Endocrine System are the glands that secrete hormones into the bloodstream.

Hypothalamus

•Brain region that controls the pituitary gland

•Controls homeostasis – the bodies ability to remain at a status quo level

Page 8: The Endocrine System. The Endocrine System are the glands that secrete hormones into the bloodstream.

Pituitary Gland

• The endocrine system’s gland that controls the other endocrine glands

• Called the “master gland”• Located at the base of the brain

and connects to the hypothalamus

Page 9: The Endocrine System. The Endocrine System are the glands that secrete hormones into the bloodstream.

Pituitary Gland

• Controls thirst by controlling the amount of water in the body’s cells

• Controls female contractions, and tells the mammary glands to produce milk for newborns

Page 10: The Endocrine System. The Endocrine System are the glands that secrete hormones into the bloodstream.

Pituitary Gland

• May control grooming habits, companionship, and sexual behavior

• Controls the flow of the human growth hormones – dwarfism and gigantism

Page 11: The Endocrine System. The Endocrine System are the glands that secrete hormones into the bloodstream.
Page 12: The Endocrine System. The Endocrine System are the glands that secrete hormones into the bloodstream.

Pineal Gland• Responsible for the hormone

“Melatonin”• Increased levels of Melatonin

cause behaviors associated with sleep

• Decreased levels of Melatonin cause behaviors associated with wakefulness

Page 13: The Endocrine System. The Endocrine System are the glands that secrete hormones into the bloodstream.
Page 14: The Endocrine System. The Endocrine System are the glands that secrete hormones into the bloodstream.

Thyroid Gland

• Endocrine gland that helps regulate the energy level in the body

• Located in the neck

Page 15: The Endocrine System. The Endocrine System are the glands that secrete hormones into the bloodstream.

Endocrine System

Page 16: The Endocrine System. The Endocrine System are the glands that secrete hormones into the bloodstream.

Thyroid Gland

• controls body temperature • Controls metabolism – our body’s

ability to transform the food we eat into usable energy

• Overactive? Behaviors may include excitability, insomnia, ADD, agitation, difficulty focusing

• Reduced Activity? Behaviors may include sleepiness, reduced muscle tone, overweight

Page 17: The Endocrine System. The Endocrine System are the glands that secrete hormones into the bloodstream.
Page 18: The Endocrine System. The Endocrine System are the glands that secrete hormones into the bloodstream.

Adrenal Gland

• Endocrine glands that help to arouse the body in times of stress

• Located just above the kidneys• Release epinephrine (adrenaline)

and norepinephrine (noradrenaline)

Page 19: The Endocrine System. The Endocrine System are the glands that secrete hormones into the bloodstream.

Endocrine System

Page 20: The Endocrine System. The Endocrine System are the glands that secrete hormones into the bloodstream.

Adrenal Glands

• Increase heart rate, blood pressure, and blood sugar

Page 21: The Endocrine System. The Endocrine System are the glands that secrete hormones into the bloodstream.
Page 22: The Endocrine System. The Endocrine System are the glands that secrete hormones into the bloodstream.

Pancreatic Gland

• Regulates the level of blood sugar (insulin) in the blood

Page 23: The Endocrine System. The Endocrine System are the glands that secrete hormones into the bloodstream.

Endocrine System

Page 24: The Endocrine System. The Endocrine System are the glands that secrete hormones into the bloodstream.

Pancreas

• Insulin is needed in the body to break down sugars in the body

• Too much insulin in the body devours all of the sugar in the blood. Behaviors exhibited include sluggishness and inattentiveness.

Page 25: The Endocrine System. The Endocrine System are the glands that secrete hormones into the bloodstream.

• Too little insulin causes a buildup of sugar in the blood and makes the kidneys use a lot more water to flush it out of the body. The extra water needed to flush the sugar comes from surrounding cells, which in turn dehydrates them and leaves them vulnerable to infection and poisons.

Page 26: The Endocrine System. The Endocrine System are the glands that secrete hormones into the bloodstream.
Page 27: The Endocrine System. The Endocrine System are the glands that secrete hormones into the bloodstream.

Sex Glands

• Ovaries (females) and testes (males) are the glands that influence emotion and physical development.

• Testosterone – primary males hormone• Estrogen – primary female hormone• Males and females have both estrogen

and testosterone in their systems.

Page 28: The Endocrine System. The Endocrine System are the glands that secrete hormones into the bloodstream.

Endocrine System

Page 29: The Endocrine System. The Endocrine System are the glands that secrete hormones into the bloodstream.

Gonads

• Testicles – release androgens (male hormones)

• Ovaries – release estrogens (female hormones)

• The presence of these chemicals influence male and female reproductive characteristics.