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![](3D"master03_background.jpg")
![3D"The](3D"slide0001_image002.gif")
![3D"A](3D"slide0001_image003.gif")
![3D"Red](3D"slide0001_image004.gif")
• Reggie the Red Blood Cell <=
span
style=3D'position:absolute;top:38.25%;left:17.22%;width:66.1%;height:6.75%=
'>yawned. All this traveling <=
/i>made him tired, but he never=
got to stop. Reggie knew tha=
t the human he was inside of <=
/i>had a route he had to travel=
, a newspaper route, but Reggie =
had different route. He had =
an oxygen route.=
Meet Reggie=
![](3D"slide0002_image006.gif")
• You see, it is =
the
sacred duty of all the red blood cells =
to
travel along the blood stream of an organism,=
delivering
oxygen to all the parts of the animal’s b=
ody.
Without red blood cells, none of us could survive.
=
Reggie’s
Job
• Reggie sees that he is in <=
/i>=
the
right ventricle, about to be propelled into=
the
pulmonary artery. The =
=
pulmonary
artery divides into two branches, a=
nd =
Reggie
takes the right branch, leading to t=
he =
right
lung. The pulmonary artery is a part of =
=
pulmonary
circulation, a short loop to the lu=
ngs =
and
back to fill Reggie with oxygen. Next st=
op, =
lungs!
The Pulmona=
ry
Artery
![](3D"slide0004_image008.jpg")
Reggie
is currently in the arteries leading to the
right lung.
Into the Lu=
ngs
![3D"Reggie's](3D"slide0005_image011.gif")
![](3D"slide0005_image012.jpg")
![](3D"slide0005_image013.gif")
Reggie
is now in the right lung.
![](3D"slide0005_image014.gif")
Oxygen Bath=
=
•<=
/span> =
Reggie’s
pulmonary artery had divided, and
divided, and divided, until he was finally in=
=
the
tiny capillaries that he is now. Reggie flowed v=
ery =
slowly,
exchanging carbon dioxide and oxygen w=
ith
the capillary's walls, and then to <=
/i>=
the
millions of alveoli, the tiny =
air
sacs in the lungs. The oxygen is attracted =
to
Reggie because of his awesome <=
/span>=
good
looks.. Not really. J The =
oxygen
is really attracted to Reggie because of a
molecule, hemoglobin, that’=
;s =
inside
him.
![3D"Reggie's](3D"slide0006_image015.gif")
![](3D"slide0006_image016.jpg")
![](3D"slide0006_image017.gif")
Reggie
is now in the capillaries of the right
lung.
![](3D"slide0006_image018.gif")
Yes, Valves=
•=
Reggie
feels great, all restored with oxygen=
! He
travels back to the heart, =
courtesy
of the pulmonary veins, and into the =
left
atrium which completes his =
=
journey
on the pulmonary circu.. Whoa! Reggie
slips and starts to fall to doom. =
=
=
He’s
done for. He’s.. Bang! Reggie falls straight
into a wall called a valve that =
=
keeps
him from being pulled back down to the
pulmonary vein by force of gravity. =
Reggie
is so glad there are valves in veins.
=
;
•
![3D"Reggie's](3D"slide0007_image019.gif")
![](3D"slide0007_image020.jpg")
![](3D"slide0007_image021.gif")
Reggie
is currently in the pulmonary artery, <=
span
style=3D'position:absolute;top:34.75%;left:58.8%;width:31.83%;height:4.0%'=
>trying
to get to the left atrium.
Aorta and O=
ff We
Go!
![3D"Reggie's](3D"slide0008_image022.gif")
![](3D"slide0008_image023.jpg")
![](3D"slide0008_image024.gif")
Reggie
is now sliding (falling) down the aorta.
![](3D"slide0008_image025.gif")
=
Inside
the Arteries
=
=
After Reg=
gie's
drop down the aorta, he was feeling dazed, s=
o I
will take this opportunity to teach=
you
an amazing fact. The arteries Reggie is rid=
ing
in are made of 3 layers:
1)The endothelium laye=
r is
on the inside and provides a smooth lining for
blood to flow over.
2)The media is the mid=
dle
layer, made up of a layer of muscle=
and
stretchy-like tissue.
3) The adventitia is the tough coveri=
ng =
that
protects the outside of the artery.
=
Veins hav=
e the
same layers as arteries, though they are not =
as
muscular. However, arteries don’t ha=
ve
valves.
![](3D"slide0009_image027.gif")
Arterioles =
and
Capillaries
![3D"Reggie's](3D"slide0010_image028.gif")
![](3D"slide0010_image029.jpg")
![](3D"slide0010_image030.gif")
Reggie
is in the femoral artery which is in
the thigh. The thigh is the top, muscular part
of your leg.
![](3D"slide0010_image031.gif")
![](3D"slide0011_image033.jpg")
Delivery Ti=
me
![](3D"slide0011_image035.jpg")