Lab_8_Lower Extremity Musculature - Copy

Lab_8_Lower Extremity Musculature - Copy - FUNTIONAL HUMAN...

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Lab 8 1 FUNTIONAL HUMAN ANATOMY LAB #8 LOWER EXTREMITY MUSCULATURE The following tips will help you in naming the muscles of the leg and foot: GLUTEAL REGION: Proximal Attachment: Distal attachment: Proximal Attachment: Distal attachment: Function: Abduction of the thigh/trunk at the hip Proximal Attachment: The Tibia is located on the medial side of the leg. The Fibula is located on the lateral side of the leg. The anterior side of the leg and the dorsal side of the foot contain muscles that perform extension or dorsiflexion and may have extensor in the name. The posterior side of the leg and the plantar side of the foot contain muscles that perform flexion or plantarflexion and may have flexor in the name. Any muscle that attaches to the 1 st digit (hallux – big toe) has Hallicus in the name Any muscle that attaches to the 2 nd digit (index finger) has Indicis in the name Any muscle that attaches to the 5 th digit (pinky finger) has Digiti Minimi in the name Any muscle that attaches to all of the digits (2-5) has Digitorum in the name Muscles that pass the malleoli posteriorly perform plantarflexion Muscles that pass the malleoli anteriorly perform dorsiflexion Muscles that pass the malleoli medially perform inversion Muscles that pass the malleoli laterally perform eversion Gluteus maximus largest/strongest muscle in the body gluteal surface of ilium, dorsal side of sacrum and coccyx, sacrotuberous ligament superior 2/3 – IT (iliotibial) band inferior 1/3 – gluteal tuberosity Function: Extension, hyperextension and external rotation of the thigh/trunk at the hip, Gluteus medius deep to gluteus maximus gluteal surface of ilium lateral surface of greater trochanter of femur Gluteus minimus deep to gluteus medius gluteal surface of ilium
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Lab 8 2 Distal attachment: Proximal Attachment: Distal attachment: Function: Lateral rotation of the thigh/trunk at the hip Proximal Attachment: Distal attachment: Function: Lateral rotation of the thigh/trunk at the hip Proximal Attachment: Distal attachment: Function: Lateral rotation of the thigh/trunk at the hip anterior surface of greater trochanter of femur Function: Flexion and internal rotation of the thigh/trunk at the hip Piriformis hip stabilizer muscle (1 of 6); sciatic nerve may occasionally pierce this muscle; can be source of chronic sciatic pain; locate just superior to sciatic nerve as it emerges from greater sciatic foramen superior border of greater trochanter of femur Superior gemellus hip stabilizer muscle (2 of 6); locate just inferior to sciatic nerve as it emerges from greater sciatic foramen ischial spine trochanteric fossa of femur; common attachment point with inferior gemellus and obturator internus Obturator internus hip stabilizer muscle (3 of 6); located between superior and interior gemellus (only tendon is visible as it emerges from lesser sciatic foramen) posterior side of obturator foramen trochanteric fossa of femur; common attachment point with inferior gemellus and obturator internus
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Lab_8_Lower Extremity Musculature - Copy - FUNTIONAL HUMAN...

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