ABSTRACT
EXTENSOR COMPARTMENTS OF THE WRIST 2. For each of the following structures, select the correct extensor compartment
through which they pass at the wrist. (Each option may be used once, more than once, or not at all.)
A. Extensor carpi ulnaris B. Abductor pollicis longus C. Extensor indicis
Options: a. First compartment b. Second compartment c. Third compartment
d. Fourth compartment e. Fifth compartment f. Sixth compartment
INTRINSIC MUSCLES OF THE HAND 3. Which one of the following is correct regarding the intrinsic muscles of the
hand? A. There are eight interossei, all innervated by the ulnar nerve. B. The sole function of the interossei is adduction and abduction of the digits. C. The lumbricals originate from the FDP tendons and are all innervated by the ulnar nerve. D. The lumbricals facilitate extension at the IP joints and are weak MP joint flexors. E. The intrinsic muscles all share a similar bipennate structure.
