Integumentary system
• Forms the external body
covering and protects/cushions
the body
• Synthesizes vitamin D
• Location of cutaneous receptors
like pain, pressure, temp
• Oil/sweat glands
• Excretes salts and urea
• helps regulate body temp
• Consists of bones,
cartilages, ligaments,
and joints
• Hematophoisis happens
inside skeletal system to
make cells from bone
marrow.
• Main function to contract
== movement!
• “machines of the body”
• Skeletal muscles- large
fleshy muscles
• Allow us to walk and
stand up etc.
• Distinct from other muscles
like heart muscles which
move fluid
• The CNS (Central Nervous
System– Brain and spinal
cord--- receive stimuli and
respond by activating
appropriate part of the
body
• Controls bodies
activities like the
nervous system but
acts more slowly
• The endocrine
glands produce
chemical molecules
called hormones and
release them into
the blood to travel
to target organs
• Organs in this
system are not
really “connected”
but they ALL secrete
hormones
• Also carry hormones and
other substances to and
from tissues where
exchanges occur
Lymphatic system
• Picks up fluid leaked from
blood vessels and returns it to
the blood
• Disposes of debris in the
lymphatic system
• Houses white blood cells
involved in immunity
• Compliments the
cardiovascular system
• Lymph nodes and lymph
organs cleanse the blood
• Within the lungs are tiny air
sacs that have thin walls–
these thin walls are where
gas exchange occurs.
• Tube that runs down
the body from mouse
to anus
• Undigested food that is
NOT transported to
the blood is excreted.
• Breakdown of nutrients
and absorption
happens in the small
intestine. After this, the
digestion system
reclaims WATER in
large intestine.
Goal is to produce offspring!
What
do you
notice?