11. Striae ( furrows ) on the anterior surface form an inverted V-shape. 12. The anterior surface of the jaw is smooth. 13. Progressive add reading portions for plus lenses are also ground onto the anterior surface of the lens. 14. By its anterior surface the adductor magnus is in relation with the obturator vein and obturator nerve. 15. The first metasomal tergum, or back, with subhorizontal dorsal surface rounds into the anterior surface . 16. The flanks and the anterior surfaces of the thighs can be seen irregularly shaped sky blue blotches. 17. Towards the middle on the anterior surface the deep concavity of the nasal notch is the limiting feature. 18. The tibial tuberosity is located on the tibia's anterior surface , ligamentum patellae, or patellar ligament. 19. The anterior surface is slightly concave and marked with three transverse grooves that indicate the junctions of the different segments. 20. Ultimately, the forearm is covered by skin, the anterior surface usually being less hairy than the posterior surface.
