<P> The sole is the underside of the foot . </P> <P> In humans the sole of the foot is anatomically referred to as the plantar aspect . The equivalent surface in ungulates is the hoof . </P> <P> The glabrous skin on the sole of the foot lacks the hair and pigmentation found elsewhere on the body, and it has a high concentration of sweat pores . The sole contains the thickest layers of skin on the body due to the weight that is continually placed on it . It is crossed by a set of creases that form during the early stages of embryonic development . Like those of the palm, the sweat pores of the sole lack sebaceous glands . </P> <P> The sole is a sensory organ by which we can perceive the ground while standing and walking . The subcutaneous tissue in the sole has adapted to deal with the high local compressive forces on the heel and the ball (between the toes and the arch) by developing a system of "pressure chambers ." Each chamber is composed of internal fibrofatty tissue covered by external collagen connective tissue . The septa (internal walls) of these chambers are permeated by numerous blood vessels, making the sole one of the most vascularized, or blood - enriched, regions in the human body . </P>

Where is the sole of the foot located