HN210 Lecture Notes - Lecture 9: Metacarpophalangeal Joint, Brachialis Muscle, Ulna
Document Summary
These bones look like they are facing in opposite directions. Radius is narrow at proximal end and thick at distal end. Which of the following carpal bones does not articulate with the ulna (exam question) Radial notch of the ulna is where the head of the radius sits proximal radial ulnar joint. Ulnar tuberosity have muscle attachment, this is where the brachialis attaches because it doesn"t allow rotation. Styloid process of radius and ulnar distal extensions from the bone, extend beyond the joint line. Interosseous membrane keeps relative positions constant, prevents things from moving from the anterior side, muscle attachment. Forearm muscles act on the elbow, wrist and digits. Muscles of hand act on digits only. In hand, only forearm muscle tendons have a whole bunch of tendons whose muscles begin in forearm. Names of muscles in forearm and hand describe chief actions and location, shape or size of muscle.
