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The Endocrine System
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The Endocrine System
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Endocrine System
Is a group of
specialized organs and
body tissues that
produce, store, and
secrete chemical
substances known as
hormones.
Hormones are the
body’s chemical
messengers
Regulates body’s
growth and
development
Play Endocrine Video
The Endocrine System
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Controls functions of
various tissues
Supports pregnancy
and other reproductive
functions
Regulates metabolism
Hormones are released
directly into the
bloodstream
Play Endocrine Summary
Components of the Endocrine
System
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Hypothalamus
Pituitary Gland
Thyroid
Parathyroid
Adrenal Gland
Pineal Body
Ovary
Testis
Pancreas
Hypothalamus
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Located deep in the
brain
Controls the pituitary
gland
Coordinates the
endocrine system
Bridges the gap
between the nervous
system and the
endocrine system
Play Hypothalamus Video
Pituitary Gland
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Located in a bony cavity just
below the base of the brain
Body’s master gland
Secretes several hormones
that regulate the function of
other endocrine glands
Regulates the body’s growth
Stimulates milk production in
women who are breast
feeding
Also secretes endorphins
which are chemicals that act
on the nervous system to
reduce pain
Play Pituitary Video
Thyroid Gland
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Located in the neck
Regulates growth
and metabolism
Plays a crucial role
in brain development
in children
Play Thyroid Video
Parathyroid Glands
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Four small glands
located at the four
corners of the
thyroid gland
Regulates the level
of calcium in the
blood
Play Parathyroid Video
Adrenal Glands
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Located on top of the
kidneys
Regulate salt and water
balance in the body
Prepares the body for stress
Regulate metabolism
Interacts with the immune
system
Produces adrenaline
Increases blood pressure
during stress
Increases heart rate during
stress
Produces the fight or flight
response
Play Adrenal Video
Gonads
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Secrete sex
hormones
Reproductive
component of the
endocrine system
Play Gonad Video
Female Gonads
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Female gonads are called
the ovaries
Located in the pelvis
Produce female sex
hormones
Estrogen
Progesterone
Controls development of
sexual organs
Stimulate the appearance of
secondary sex
characteristics
Regulate menstruation and
pregnancy
Play Gonad II Video
Male Gonads
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Male gonads are called
the testes
Located in the scrotum
Produce male sex
hormones and sperm
Testosterone
Controls development
of sexual organs
Stimulate male
secondary sex
characteristics
Stimulate muscle
growth
Pancreas
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Located in the upper
abdomen just under
the stomach
Secretes digestive
enzymes into the
digestive system
Produces insulin
Regulates energy
and metabolism
Play Pancreas Video
Pineal Body
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Located in the
middle of the brain
Regulates the
wake/sleep cycle
How the Endocrine System Works
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Hormones are
secreted directly into
the blood stream
Receptors in the
target area bind with
the hormones and
produce chemical
changes in response
to the body’s needs
Play Hormone Video