postaxial

/pohst-ak-see-uhl/US // poʊstˈæk si əl //UK // (pəʊstˈæksɪəl) //

后轴,后轴的,轴后,后轴线

Definitions

adj.形容词 adjective

1
Anatomy, Zoology.
- : pertaining to or situated behind the axis of the body, especially the posterior side of the axis of a limb.

Each limb then has a dorsal surface, a ventral surface, an anterior or pre-axial edge, and a posterior or postaxial edge.
In the anterior limb the radius and the pollex are pre-axial, the ulna and the fifth finger are postaxial.
In the posterior limb the tibia and the hallux are pre-axial, the fibula and the fifth toe are postaxial.
Archipterygia too are found in the pectoral fins of the Ichthyotomi, but the postaxial radiale are much reduced.
The ulna or postaxial bone is somewhat expanded distally, but is not drawn out proximally into an olecranon process.