Fig 7. Contraction period in consecutive order of the tract branches, n, n+1, and n+2 during the inward and outward flows.

The seconds of contraction in order ’n’ are marked as circle dots, in ’n+1’are marked as solid squares, and in ’n+2’ are marked as triangles. The ANOVA shows that designated inward flows have no significant differences in consecutive branches(n = 30, p = 0.50). The outward flows also show no significant differences between consecutive branches (n = 30, p = 0.67).