Experiment 7 Physical Skeleton The Appendicular Skeleton As can be derived from its name the appendicular skeleton is composed of the bodily appendages better known as the extremities The appendicular skeleton is divided into two regions the upper extremity and the lower extremity In this experiment you will take a closer look at the bones within each of the these regions along with their functionality Materials Skeleton Model Post Lab Questions 1 What are the four parts of the upper extremity and the lower extremity of the appendicular skeleton Upper Arms forearms wrist and hands Lower Thigh lower leg ankle foot 2 Compare and contrast the size and function of the upper and lower extremities of the appendicular skeleton refer to the skeleton below for help The upper extremities are smaller than the lower extremities They both have the same general anatomy The upper arm and upper leg both have one long bone on top The lower arm and lower leg have two parallel bones that make them up In the arm it is the radius and ulna and in the leg it is the tibia and fibula The lower limbs function differently because they have to hold body weight and transfer that weight to the ground 2013 eScience Labs LLC All Rights Reserved 3 What are the three fused bones that make up the coxae of the pelvic girdle What is their location in relationship to one another The three bones that fuse together to make the coxae are the ilium pubis and ischium The ilium are the bones on the top that look like wings they are flat bones The pubis and ischium make up the bottom rings of the hipbone The middle parts of the bottom rings are the pubis bones and they are wider in women than in men for child bearing The ischium are the outer parts of those rings 2013 eScience Labs LLC All Rights Reserved
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