Cardiovascular Unit (Day 2)
Bell Ringer:
Read Pages 180-181 in your health
book.
Define any ten(10) bold words.
Save these to be turned in with your
test.
Circulation
Circulation is the
movement of the
blood through the
heart and around
the body.
Steps to Circulation:
#1-Vena Cava- These
two veins are the
largest in the body;
they carry
deoxygenated blood
(blood without
oxygen) to the right
atrium of the heart.
Steps to Circulation:
#2- Right Atrium-The
upper right chamber
of the heart squeezes
deoxygenated blood
through the tricuspid
valve filling the right
ventricle.
Steps to Circulation:
#3- Tricuspid ValveA "flap" between
the right atrium and
the right ventricle
that allows blood to
flow in one
direction only.
Steps to Circulation:
#4- Right VentricleThe lower right
chamber of the
heart contracts and
sends the blood
through the
pulmonary artery.
Steps to Circulation:
#5- Pulmonary
Valve-A "flap"
between the right
ventricle and
pulmonary artery
that allows blood to
flow in one
direction only.
Steps to Circulation:
#5A- The pulmonary
arteries carry
blood to the lungs
where the blood
loses carbon
dioxide and picks
up oxygen when
you breathe.
Steps to Circulation:
#5B- The pulmonary
veins carry
oxygenated blood
back to the heart into
the left atrium of the
heart.
Pulmonary arteries
and pulmonary veins
are considered your
pulmonary vessels.
Steps to Circulation:
#6- Left Atrium- The
upper left chamber
of the heart contracts
and sends
oxygenated blood
through the mitral
valve filling the left
ventricle.
Steps to Circulation:
#7- Mitral Valve- A
"flap" between the
left atrium and the
left ventricle that
allows blood to
flow in one
direction only.
Steps to Circulation:
#8- Left VentricleThe lower left
chamber of the
heart pumps the
oxygen-rich blood
through the aortic
valve into the aorta.
Steps to Circulation:
#9- Aortic Valve- A
"flap" between the
left ventricle and
aorta that allows
blood to flow in
one direction only.
Steps to Circulation:
#10- Aorta- The
largest artery in the
body branches off
into numerous
smaller arteries that
carry oxygenated
blood to the rest of
the body
Steps to Circulation:
The body takes the oxygen out of the blood and
uses it in your body's cells.
The cells say thanks by using the oxygen, making
carbon dioxide and other stuff it needs to get rid
of, and dumping the carbon dioxide and wastes
back into the blood to be carried away.
It all happens in less than a minute (about 60
seconds to pump blood to every cell in your body)
How Much Air Do We Need?
About 21% of the air we breathe in is
oxygen.
We use about ¼ of that, therefore
about 15% is breathed out for rescue
breathing which is plenty of oxygen for
the victim.
Composition of the Earth's
Atmosphere
http://education.jlab.or
g/glossary/abund_atmo
s.html
Circulation Video Clip
The End!!