Table 1.

List of characteristic dimensions, blood flow velocities, and pressures for all the different parts of the vascular tree.

	Elastic Arteries	Muscular Arteries	Arterioles	Capillaries	Venule	Vein
Diameter	2.5–1 cm	0.3 mm–1 cm	300–10 µm	10–5 µm	8–100 µm	100 µm–2 cm
Wall thickness	1 mm	1 mm	6 µm	0.5 µm	1 µm	0.5 mm
Pressure (S: Systolic, D: Diastolic)	120 S/90 D mm Hg	110 S/80 D mm Hg	80 S/60 D mm Hg	30 mm Hg	15 mm Hg	10 mm Hg
Blood flow velocity	50–45 cm·s⁻¹	45–20 cm·s⁻¹	20–5 cm·s⁻¹	5–0.03 cm·s⁻¹	5–10 cm·s⁻¹	10–30 cm·s⁻¹
Area of the vascular bed	2.5 cm²	250 cm²	2500 cm²	4500 cm²	3500 cm²	1000 cm²