APA 1313 Study Guide - Final Guide: Articular Processes, Biceps, Trochlear Notch

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The trochlea of humerus articulates with the trochlear notch of ulna. The capitulum articulates with the head of radius. The functions of the greater and lesser tubercles are for attachment and leverage for some scapulohumeral muscles: the ulna is medial to the radius; the radius is lateral to the ulna. The ulna has two proximal projections: olecranon and coronoid process. The heads of the metacarpals articulate with the proximal phalanges and the bases articulate with the carpal bones. Joints of the head, trunk, and pelvis: the intervertebral disc is made up of the anulus brosis and the nucleus pulposus. The anulus brosis is a ring consisting of concentric lamellae of brocartilage forming the circumference of the iv disc. It provides a strong bond between adjacent vertebrae. The nucleus pulposus is the central core of the iv disc. The anterior extends from the pelvic surface of the sacrum to the anterior tubercle c1 and occipital bone anterior to the foramen magnum.

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