Page 9, Hemodynamics, Dr. D. Penney
At least three factors contribute to the so-called hydrostatic pressure, a term which is not accepted by Henry Badeer.
The filling pressure of the fluid contained in the vasculature. According to this concept, even if the heart is not pumping, the vascular system is filled with a volume of blood and this volume within the elastic structures contributes a small but significant pressure of approximately 12-16 mmHg. This is a concept espoused by Arthur Guyton.
Gravity acting on long vertical vascular columns contributes to transmural pressure; thus, the pressure in leg veins is greater than in neck veins.
Viscous flow pressure is that portion of the transmural pressure generated when the heart pumps against the resistance of the circuit.
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