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Endocrine
System
Organs In The Endocrine
System
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

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Endocrine glands-produce and release their
chemicals products directly into the bloodstream.
Thyroid glands- hormones control the release of
energy from food molecules.
Parathyroid glands-release hormone that regulate the
amount of calcium in the blood.
Adrenal glands-one hormone triggers the body to
respond to emergency situations. Other hormones
affect the balance of salt and water in the kidney
and help control the amount of blood sugar.
Organs continued
 Testes-release
testosterone which control the
charges that take place in a teen body.
 Uterus- The hollow muscular organ of the
female reproductive system in which a baby
develops.
 Ovaries- release female sex hormones.
 Pancreas- Produces insulin and glucagon.
They control the level of glucose in the blood.
Organs continued
 Thymus-Hormone
that helps the immune
system fight infection.
 Pituitary gland-communicates with the
hypothalamus to control many body
activities.
 Hypothalamus-a tiny part of the brain near
the middle of your head, is the link between
the two systems.
Hypothalamus
Thyroid Gland
Parathyroid Glands
Adrenal Glands
Pituitary gland
Thymus
Pancreas
Ovaries
Testes
Uterus
Hormones And Their Effects On
The Body
 Change
(turn on, speed
up, etc.) activities of
organs and tissues
 Adrenaline helps body’s
reaction to danger and
stress.
 Pancreas has two
hormones insulin and
glucagon which helps
control sugar levels.
One Disease That Can Effect
The Endocrine System
Multiple Endocrine Neoplasia (MEN)
 Effects other glands in the body
 Increased risk of tumors on endocrine gland
 There a couple different kinds of MEN. There
is MEN-I, MEN-II
 MEN-I is when several endocrine glands
become over active
 MEN-II has an increased risk of cancerous
tumors
How Negative Feedback
Controls Hormone Levels
 When
there is enough of a certain hormone,
the endocrine system sends signals to stop it.
 This is an important way that the body
maintains homeostasis.
 Negative feedback- the type of signal used
in a heating signal.
How The Endocrine System
Interacts With Other Body
Systems
 The
endocrine system
works with the nervous
system
 Hypothalamus is a tiny
part of the brain near
the middle of your
head, is the link
between the two
systems
Endocrine
System
Video!
NERVOUS SYSTEM
CHAPTER 25, Section 1