Download Arteries, veins, capillaries

What supports the heart?
Arteries, veins, and capillaries are
in fact all forms of blood vessels,
just with different shapes and roles
in the body. Blood vessels are an
integral part of the circulatory
system, which transfers oxygen
and important components of life
around the body and removes
What support the heart
waste. Each of the three major
Arteries,veins,capillaries
types of blood vessels plays their
own role in this complex system,
helping to keep a human body
functioning at full strength and
health.
Arteries, veins, and capillaries
VEINS
ARTERIES
CAPILLARIES
The arteries are the blood vessels
that deliver oxygen-rich blood from
the heart to the tissues of the body.
Before caption
A vein is an elastic blood vessel
that transports blood from various
regions of the body to the heart.
Veins can be categorized into four
main types: pulmonary, systemic,
superficial, and deep veins.
Pulmonary veins carry oxygenated
blood from the lungs to the left
atrium of the heart. Systemic veins
return deoxygenated blood from the
rest of the body to the right atrium
of the heart. Superficial veins are
located close to the surface of the
skin and are not located near a
corresponding artery. Deep veins
are located deep within muscle
tissue and are typically located near
a corresponding artery with the
same name (for example coronary
arteries and veins).
The largest artery is the aorta, the
main high-pressure pipeline
connected to the heart's left
ventricle. The aorta branches into a
network of smaller arteries that
extend throughout the body. The
arteries' smaller branches are called
arterioles and capillaries. The
pulmonary arteries carry oxygenpoor blood from the heart to the
lungs under low pressure, making
these arteries unique.
Arteries carry blood away from the
heart to the body. The diagram
helps you understand this more
clearly.
After caption
Capillaries are tiny blood vessels
that pass blood from the arteries
into the veins. They are very small,
the largest being about 10
micrometers in diameter. Their
walls are thin which allows
materials to pass into them.
Different types of capillaries exist
and perform different functions for
the body. Primarily, however, they
are able to profuse the tissues of the
body with needed oxygen and
important nutrients supplied by
blood.