1:34:52
-Dr. Gull.
-Yes!
1:34:55
You were describing
the human heart.
1:34:59
Yes.
1:35:02
Yes.
1:35:05
The human heart...
1:35:07
is a dense and powerful muscle...
1:35:11
much like the organic
equivalent of mahogany.
1:35:15
And notoriously difficult...
1:35:18
to burn.
1:35:23
About the size of a fist...
1:35:26
it provides the motor power
for the circulatory system.
1:35:31
The heart contains two atria,
two ventricles...
1:35:34
and fourvalves.
1:35:37
It is, in eff.ect, asingle pump...
1:35:41
powering a double circuit.
1:35:45
In the adult the heart rate
averages 70 to 80 beats a minute.
1:35:52
Such is the force
of the heartbeat...
1:35:56
that if the body's largest artery,
the aorta, is severed...