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Rotate the image to an anterior facing view. - Ensure the menu on the right is displaying only the skeletal and muscular systems. (Only the sikull icon and the arm/muscle icon should be blue). - Locate each muscle using the word bank and description. - Once you select the muscle, select the book ("Details") icon from the pop-up menu to learn more about the muscle and ensure you have selected the appropriate muscle.$$1.$$: In the anterior view, locate two small muscles that cross the pelvis just inferior to the abdominal muscles. These muscles are often referred to as a group called the "iliopsoas". To fully view these muscles, hide the muscles of the abdomen, as well as the inguinal ligament. Locate the medial of these two muscles. This muscle originates on the fumbar vertebra, crosses the pelvis, and inserts on the lesser trochanter of the femur. The Skeletal and Muscular Systems Essay Paper This muscle is a thigh or "hip" flexor, and it additionally laterally rotates the thigh. If the thigh is stabilized, this muscle can act to flex the spine. Select the red pin icon from the pop-up menu to isolate this muscle, view its attachments, and view the animations "Hip Flexion", "Hip Lateral Rotation", and "Spine Flexion".$$2.$$Locate the more lateral of the muscle pair. This muscle originates on the ilium and inserts on the lesser trochanter of the femur with muscle 1 . This muscle is also a hip/thigh flexor. When in the supine position, if the thigh is flexed, this muscle can fex the trunk, to assist with sitting up. Select the red pin icon from the pop-up menu to isolate this muscle; view its attachments, and view the animations "Hip Flexion" and "Hip Lateral Rotation".$$3.$$: Rotate the body to a posterior view.

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Locate the largest and most superficial of the gluteal muscles. This muscle forms the bulk of the buttocks. This muscle originates on the coxal bone, the sacrum, and the coccyx. It then inserts on the posterior femur. This muscle is a major extensor of the thigh. It also acts to laterally rotate the thigh. Select the red pin icon from the pop-up menu to isolate this muscle, view its attachments, and view the animations "Hip Extension", "Hip Abduction", and "Hip Lateral Rotation" to see this muscle in action.$$4.$$: Hide the muscle identified in$$♯3$$to reveal a slightly smaller muscle that originates on the ilium, sacrum, and coccyx and inserts on the fibers of the iliotibial tract and gluteal tuberosity. This muscle primarily abducts, laterally rotates, and extends the hip. Select the red pin icon from the pop-up menu to isolate this muscle, view its attachments, and view the animations "Hip Extension", "Hip Abduction", and "Hip Lateral Rotation" to see this muscle in action. : Hide the muscle identified in #4 to reveal a smaller muscle that originates on the ilium and inserts on the greater trochanter of the femur. This muscle abducts the thigh and stabilizes the hip. This muscle primarily abducts, laterally rotates, and extends the hip. Select the red pin icon from the pop-up menu to isolate this muscle, view its attachments, and view the animation "Hip Abduction" to see this muscle in action.$$6.$$: Rotate the body to the anterior view. Locate a broad, flat muscle on the lateral aspect of the hip. This muscle originates on the illum and inserts on the tibia using the iliotibial tract, a large tendon distal to the belly of the muscle. This muscle abducts, medially rotates and flexes the thigh. Select the red pin icon from the pop-up menu to isolate this muscle, view its attachments, and view the animation "Hip Flexion", "Hip Medial Rotation" and "Hip Abduction" to see this muscle in action.$$7.$$Rotate the torso to view the anterior portion of the thigh. Locate the long thin muscle that crosses from proximal/lateral to distal/medial. This muscle flexes, abducts, and laterally rotates the thigh at the hip joint. Because this muscle crosses both the hip and the knee, It also flexes and medially rotates the leg at the knee joint. The Skeletal and Muscular Systems Essay Paper  Select the red pin icon from the pop-up menu to isolate this muscle, view its attachments, and view the animations to see this muscle$$8.$$: Hide the muscle identified. Locate the strap-like muscle that, spans from the pubis to the linea aspera on the femur. This muscle adducts the thigh, flexes the thigh, and laterally rotates the thigh. Select the red pin icon from the pop-up menut 9. Hide the muscle identified in #8. Identify the group of 3 muscles just medial to #8. These muscles are adductors. They pull the thighs closer to the midline. Rotate the torso to view the medial aspect of the thigh. Select any of these three muscles and select the red pin icon from the pop-up menu to isolate these muscles, view their attachments, and view the animations to see these muscles in action.$$10.$$:Locate the most superficial and medial strap-like muscle that originates on the pubic symphysis and the pubic arch and inserts on the tibia. This muscle also adducts the thigh. Additionally, it flexes the leg at the knee and medially rotates the lower ieg. Select the red pin icon from the pop-up menu to isolate this muscle, view its attachments, and view the animations to see this muscle in action. The Skeletal and Muscular Systems Essay Paper