Lab 4 - Image 1

Ground contact surface of equine fore (wide) and hind (narrow) feet. 1, wall; 2, bar (an inward reflection of the wall); 3, sole; 4, apex of the frog; 5, central sulcus of the frog; 6, collateral sulcus = paracuneal groove (between frog and bar or sole); 7, bulb of heel.