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Hormones
Endocrine System
Hormones
• Humans can send information through
nerve impulses,
• Or through chemical messages called
Hormones.
Hormones
• Hormones are a
chemical substance
produced by a gland,
carried by the blood,
that alters the activity
of one or more
specific target organs
and is then destroyed
by the liver
Hormones
• Hormones are made in special glands
called endocrine glands.
Adrenaline
• Adrenaline is designed to help you cope
with danger (fight or flight response).
• Also called epinephrine it increases
heart rate, pulse rate, and blood pressure,
Also raises the blood levels of glucose and
lipids
So what systems are affected
and how?
• Name the systems of your body that would
be affected by the production of
adrenaline.
• Talk to your neighbor and be ready to
share out.
• 1 minute
• What did you come up with?
Compare and Contrast
Nervous System
Made of…
Information
transmitted…
Speed of
transmission
Endocrine
System
Endocrine
glands
Along neurons, in the form of
electrical impulses
How long does the Lasts a very short
effect last
time
Compare and Contrast
Nervous System Endocrine
System
Made of…
neurons
Secretory cells
Endocrine glands
Information
transmitted…
Along neurons, in the
form of electrical
impulses
By chemicals
called hormones
Speed of
transmission
Very fast along
neuron
Chemicals travel
slower through
the blood
Effect may last
longer
How long does Lasts a very
the effect last short time
What makes your adrenaline
flow?
• Read through the different adventures.
• Share one that you would love to do and
one that you would never do and the
reason for each.
• If you wouldn’t do any, pick the worst two
and if you would do them all, pick two that
are the most exciting.