Chapter
5
Vascular Branching
5.1
Branching
Geometry
5.1.1
Complexity
of
Vascular Branching
The branching geometry of the vascular
network has intrigued
investigators for centuries. Its complexity and precise arrangement of the
large vessels and their connectivity to the vast number of small
microcirculatory vessels have amazed scientists and clinicians alike the.
The intermingling
of
geometric
architecture
and the mechanical
properties of the vascular structure at branching points is
of
particular
interest here.
To perfuse organ vascular beds and meet specific tissue metabolic
demands, the vascular system displays its utmost efficient network
structure through branching of blood vessels. This allows prompt spatial
and temporal distribution of oxygen and nutrients and removal of waste
products. One would marvel the vascular system of the human heart, for
instance, with its own well-meshed branching circulation, the coronary
circulation, to supply its own blood according to its own energetics and
mechanical performance.
The lungs, with its branching pulmonary
vascular
system give another example of achieving the functional
performance of ventilation-perfusion and on demand. The complex
branching topology of the cerebral circulation to supply oxygen and
blood flow to neuronal networks and the extensive network
of
vessels in
the renal circulation, are just some of the examples one can marvel the
branching structure of the vascular system.
The branching structure of blood vessels can be viewed as a simple
consequence of the necessity in providing an efficient vascular network
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