#hair is elliptic in crosssection. Are the directions of the ellipse axes consistent for hairs that grow close to each other?

(https://sci-hub.se/https://www.sciencedirect.com/science/article/abs/pii/S1751616120307086 unsurprisingly find that bending strain-stress curves are different when bending along the short and long axis, so I wonder if this has anything to do with preferred hair bending direction)