Cardiovascular System
The heart pumps blood through as many
as 60,000 miles of blood vessels, delivering
nutrients to, and removing wastes from, all
body cells.
Cardiovascular System
Integumentary System
Changes in skin
blood flow are
important in
temperature control.
Skeletal System
Bones help control
plasma levels of
calcium ions, which
influence heart action.
Muscular System
Blood flow increases
to exercising skeletal
muscle, delivering
oxygen and nutrients
and removing wastes.
Muscle actions help
the blood circulate.
Nervous System
The brain depends on
blood flow for survival.
The nervous system
helps control blood
flow and blood
Endocrine System
Hormones are carried
in the bloodstream.
Some hormones
directly affect
the heart and
blood vessels.
Lymphatic System
The lymphatic
system returns
tissue fluids to the
Digestive System
The digestive system
breaks down nutrients
into forms readily
absorbed by the
Respiratory System
The respiratory
system oxygenates
the blood and
removes carbon
dioxide. Respiratory
movements help the
blood circulate.
Urinary System
The kidneys clear the
blood of wastes and
substances present in
the body. The kidneys
help control blood
pressure and blood
Reproductive System
Blood pressure
is important in
normal function of
the sex organs.
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