Anatomical snuffbox in between the first and second metacarpals to contribute to the superficial and deep palmar arches. The cephalic vein arises within the anatomical snuffbox, while the dorsal cutaneous branch of the radial nerve can be palpated by stroking along the extensor pollicis longus with the dorsal aspect of a fingernail. The radius and scaphoid articulate deep to the snuffbox to form the basis of the wrist joint. In the event of a fall onto an outstretched hand (FOOSH), this is the area through which the brunt of the force will focus. This results in these two bones being the most
Anatomical plane Anatomical plane An anatomical plane is a hypothetical plane used to transect the human body, in order to describe the location of structures or the direction of movements. In human and animal anatomy, three principal planes are used: There could be any number of sagittal planes; however, there is only one cardinal sagittal plane. The term "cardinal" refers to the one plane that divides the body into equal segments, with exactly one half of the body on either side of the cardinal plane. The term "cardinal plane" appears in some texts as the "principal plane". The terms are interchangeable. The