Unit 5 Case Study 1: Hassan's Story

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Unit 5 Case Study 1: Hassan’s Story A. The clue that would tell Stefan which scapular surface was anterior and which was posterior is the fact that there is a prominent ridge called the spine that runs diagonally across the posterior surface of the scapula. There is a projection on the anterior surface, located on the lateral end of the superior border called the coracoids process that is easy to locate. The name of the shallow, oval socket of the scapula that Stephan placed next to the humerus called the glenoid cavity (it is located inferior to the acromion and articulates the head of the humerus). B. The bone that Stefan is referring to as the “collarbone” is the clavicle (the S-shaped long, slender bone that lies horizontally across the anterior part of the thorax superior to the first rib). C. The surface marking that Stefan could use to distinguish the right humerus from the left humerus is if he holds the bone so that the capitulum and the trochlea face him (anterior) and then look at the head of the humerus (rounded head is superior (up) and pointing medially(towards the body’s midline)). If the head is facing left it is the left humerus, and if the head is facing right, it is the right humerus. He can also look at the deep olecranon fossa on the posterior side (where the olecranon process of the ulna fits in when the elbow is straightened). D. The reason Stefan thinks that an enlarged right deltoid tuberosity might indicate right-handedness is because the deltoid tuberosity is the sight of attachment of the tendons of the deltoid muscle (a large and powerful muscle of the shoulder joint). When this hand is used more often it tends to distinctively shape the surface anatomy of the shoulder and humerus. E. The location of the pubic symphysis that Stefan refers to in the story is a joint where the hip bones unite anteriorly. They

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