Architecture of the Circulation, Dr. D. Penney

Table 7.00. Comparison of the systemic and pulmonary circulations. Many differences.

Serves many tissues Serves one organ
Variable requirements Single function
Many controls Little (not no) controls
High pressure head Low pressure head
High resistance Low resistance
Long hydrostatic columns Short hydrostatic columns
Larger blood volume Smaller blood volume
Adrenergics more important Adrenergics less important
Arteries hold less blood Arteries hold more blood

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