Unit 5 Case Study 1 Hassans Story

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A&P 1 Unit 5 Case Study 1 7/20/2014 Hassan’s Story A) Which clue would tell Stefan which scapular surface was anterior and which was posterior? What is the name of the shallow, oval socket of the scapula that Stefan placed next to the humerus? - There is a prominent ridge called the spine that runs diagonally along the posterior surface of the scapula. - Glenoid cavity B) Which bone is Stefan referring to as the “collarbone”? - Clavicle C) Which surface markings could Stafan use to distinguish the right humerus for the left? - Whichever way the head faces when you look at it, determines which side it is. D) Why would Stefan think that an enlarged right deltoid tuberosity might indicate right- hardness? - Because it’s where the deltoid muscle attaches to. E) What is the location of the pubic symphysis Stefan refers to in the story? - It’s the joint between the two hip bones. It consist of a disc of fibrocartilage. In the later stages of pregnancy a hormone increases the flexibility of the pubic symphysis to ease delivery of the baby. F) Which adaptation would have taken place in the pubic symphysis of the female skeleton during the later stages of her pregnancy in preparation for the birthing process? - The hormone relaxin is released to increase the flexibility of the pubis symphisis to ease delivery of the baby. G) What clues could Stefan have used to identify the gender of the pelvis? - Females have an open, circular pelvic inlet; broader sciatic notch; wider angle where the two pubic bones meet in front; more outwardly flared hip bones. H) How would Stefan have distinguished between the left and right hip bones? - The acetabulum should be posterior and lateral. This will tell you which side it’s from. I) Would the bones of each hip bone be fused in the female child’s skeleton? - No, they don’t fuse till

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