 |
Home |
|
Without the heart, you would not be alive. The heart
pumps your |
|
Topics |
|
blood to the different parts of your body, keeping
them alive. |
|
Guestbook |
|
But what is the heart and how does it keep us alive? |
|
Quiz |
|
|
|
HBM Forum |
|
The cardiovascular system consists of the heart and
three types |
|
Chat Room |
|
of blood vessels: arteries, veins, and capillaries.
The heart is made |
|
Search |
|
up of four chambers: the right and left atria, which
receive blood |
|
Favorite Sites |
|
coming from the tissues of the body; and the right
and left |
|
Mailing List |
|
ventricles, which send blood to the tissues. Arteries
are blood |
|
Feedback |
|
vessels that carry blood away from the heart. Veins
carry blood |
|
Help Desk |
|
to the heart. Capillaries are the blood vessels that
connect arteries |
| |
|
|
to veins. It is across the walls of the capillaries
that the exchange |
| |
|
|
of the materials to and from the cells of the body
occurs. This |
| |
|
|
arrangement in which the blood is always contained
with blood |
| |
|
|
vessels is called a closed circulatory system. |
| |
|
|
|
| |
|
|
The Head |
| |
|
|
|
| |
|
|
Your head needs blood to function just like the other
parts of |
| |
|
|
your body. There are two major arteries that go into
your head. |
| |
|
|
These are the right and left common carotid arteries.
These arteries |
| |
|
|
are on both sides of your neck. Your brain gets blood
from the |
| |
|
|
internal carotid arteries. The internal carotid
arteries go through |
| |
|
|
an opening at the base of the skull. |
| |
|
|
|
| |
|
|
Circulation |
| |
|
|
|
| |
|
|
It is very dangerous to have a blocked artery. If an
artery becomes |
| |
|
|
blocked or clogged, blood can't reach all of your
body. Luckily, |
| |
|
|
you have backup systems in case this happens. You may
need |
| |
|
|
surgery if an artery gets blocked. |
| |
|
|
|
| |
|
|
Back to Top |
