Pre-lab 4_ Elbow, Forearm, Wrist, & Hand

1. Create a resource for learning the bones of the wrist and hand. Draw or sketch all the bones of the wrist and hand. Be sure to label each carpal, metacarpal and digit. 2. Provide a definition or labeled image for each of the motions listed below. (Hint: movement of the digits is not described with respect to the midline of the trunk!) ● Abduction of digit 2 - The bipennate dorsal interossei are the major abductors ● Abduction of digit 3 - The bipennate dorsal interossei are the major abductors ● Adduction of digit 4 - The bipennate dorsal interossei are the major abductors ● Flexion of digit 1 - Extrinsic thumb muscles that act on the first digit: FLEXOR POLLICIS LONGUS ● Adduction of digit 1 - Palmar (Volar) Interosse i 3. Provide a definition for the following terms: ● Longus - a long structure (as a muscle) in the body ● Brevis - a Latin word meaning "short," ● Superficialis - closer to the surface of the body ● Profundus - a deep muscle of the ulnar side of the forearm that flexes especially the terminal phalanges of the four fingers . ● Carpi - the part of the upper extremity between the hand and the forearm; wrist. ● Interosseous - situated between bones ● Pollicis - of the thumb ● Digitorum - of the fingers or toes ● Retinaculum - a band of thickened deep fascia around tendons that holds them in place ● Aponeurosis - a thin sheath of connective tissue that helps connect your muscles to your bones