The carpus:

• A. there are five extensor tunnel compartments
• B. the extensor expansion attaches to the anterolateral border of the radius above the styloid process, and distally to the pisiform and trapezoid bones
• C. the radiocarpal joint is an uniaxial synovial joint
• D. there are no muscular attachments to the extensor surface of the carpus
• E. the bones palpable in the anatomical snuff box are the radial styloid, triquetral, scaphoid and base of first metacarpal