19
The Cardiovascular System:
Blood Vessels
PART 1
Blood Vessel Structure
and Function
Structure of Blood Vessel Walls
(p. 693)
Arterial System
(pp. 693–696)
Capillaries
(pp. 696–698)
Venous System
(pp. 698–699)
Vascular Anastomoses
(pp. 699–701)
PART 2
Physiology of Circulation
Introduction to Blood Flow, Blood
Pressure, and Resistance
(pp. 701–702)
Systemic Blood Pressure
(pp. 702–704)
Maintaining Blood Pressure
(pp. 704–711)
Blood Flow Through Body Tissues:
Tissue Perfusion
(pp. 711–720)
PART 3
Circulatory Pathways:
Blood Vessels of the Body
The Two Main Circulations of the
Body
(p. 721)
Systemic Arteries and Veins:
Differences in Pathways and Courses
(p. 721)
Principal Vessels of the Systemic
Circulation
(pp. 721–745)
Developmental Aspects of Blood
Vessels
(p. 745)
692
B
lood vessels are sometimes compared to a system of pipes
with
blood circulating in them, but this analogy is only a starting point. Unlike rigid
pipes, blood vessels are dynamic structures that pulsate, constrict, relax, and even
proliferate. In this chapter we examine the structure and function of these important
circulatory passageways.
Te
blood vessels
of the body form a closed delivery system that begins and ends
at the heart. Te idea that blood circulates in the body dates back to the 1620s with the
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