Page 213 - The Miracle of the Blood and Heart
P. 213
Blood Vessels: A Flawless
Transportation Network
The aorta leaves the
heart and divides in
two: The upper branch
goes to the head and
Aortic arc
arms, and the lower to
various subsidiary ves-
Chest aorta sels and organs. When
the body is at rest, the
oxygen is transported
to the tissues in less
than 10 seconds after
it is picked up from the
lungs. During exercise,
this period is reduced
to 2 to 3 seconds.
The special property mentioned above is extremely impor-
tant. Thanks to their elastic muscular structure, which is capa-
ble of expanding, the arteries have a storage function that
allows there always to be blood in the body. This elasticity in
the arteries is also important, since their flexibility prevents
the pressure from rising too high when blood is pumped
through the system. At the same time, elasticity permits a con-
stant flow of blood through the tissues by maintaining a high
arterial pressure between heartbeats. 105 God has created this
elasticity, which is necessary in many aspects in order to main-
tain the body's equilibrium.
The arteries lie generally deep within the body. In some
places, however—for example, in the wrist, the temples, neck,
the backs of the feet and ankles—they are much closer to
the surface. In these regions, the passage of blood as it
strikes the arterial wall under high pressure can be
felt under the skin with every heartbeat.
Adnan
Oktar
211