Table 1.

Geometrical parameters and distributions measured in our previous study (6)

Geometries	Fiber Type	Distribution Type	Parameters
Orientation angle	Collagen	Bimodal normal distribution	μC1 = 0.37, σC1 = 0.20, wC1 = 0.22
			μC2 = 1.91, σC2 = 0.50, wC2 = 1.0 − wC1
	Elastin	Bimodal normal distribution	μE1 = 0.33, σE1 = 0.20, wE1 = 0.4*
			μE2 = 1.99, σE2 = 0.57, wE2 = 1.0 − wE1
Waviness	Collagen	Beta distribution	α1 = 5.01, α2 = 52.67, a = 0.0, b = 4.0
Volume fraction	Collagen		fC = 33%
	Elastin		fE = 22%

^*A recent study found that the minor orientation of elastin was approximately orthometric to the major orientation in each sublayer of adventitia, and some elastin fibers in the minor direction were covered by fibers in the major direction at no-load or low-load states [see Fig. 5 in Chen et al. (6)], suggesting that w_E1 was larger than the value (0.19) measured at ZSS.