Muscle - Lab 9 Muscles of Lower Extremity Abdomen and Skull...

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Lab 9: Muscles of Lower Extremity, Abdomen, and Skull Muscle Origin Insertion Action Synergists Antagonists Pelvic Region Move femur Iliopsoas : Iliacus/psoas major -Can be seen on anterior surface medial to sartorius -Iliacus- fan-shaped, more lateral -Psoas major- longer, thicker and more medial 1. Transverse process and bodies of lumbar vertebrae (psoas major) 2. Iliac Fossa (iliacus) Lesser trochanter of femur Flexion at Hip -Adductor longus -Sartorius -Rectus femoris -Gluteus maximus -Biceps femoris -Semitendinosus -Semimembranosus -Adductor magnus Torso Flexion Gluteal Muscles (posterior hip) Common origin on pelvis or sacrum Abduction of Thigh Gluteus maximus -Largest and most superficial of glutes -Meant for powerful movements 1. Ilium 2. Sacrum 3. Coccyx Gluteal tuberosity of femur Extension at Hip -Biceps femoris -Semitendinosus - Semimembranosu s -Adductor magnus -Adductor longus -Sartorius -Rectus femoris -Iliopsoas Lateral rotation at Hip -Sartorius -Gluteus medius -Gluteus minimus -Adductor magnus -Adductor longus -Gracilis Abduction at Hip -Gluteus medius -Gluteus minimus -Sartorius -Adductor magnus -Adductor longus -Gracilis Gluteus medius -Deep to gluteus max. Walking” Muscles Ilium Greater trochanter of femur Medial Rotation at Hip -Adductor magnus -Adductor longus -Gracilis -Sartorius -Gluteus maximus Abduction at Hip -Gluteus maximus -Sartorius Adductor magnus -Adductor longus -Gracilis Gluteus minimus -Smallest and deepest Ilium Greater trochanter of femur Medial Rotation at Hip -Adductor magnus -Adductor longus -Gracilis -Sartorius -Gluteus maximus
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of glutes -Walking” Muscles Abduction at Hip -Gluteus maximus -Sartorius Adductor magnus -Adductor longus -Gracilis Piriformis - landmark -Posterior part of hip joint Anterolateral surface of sacrum Greater trochanter of femur Only need to ID: Follow sciatic nerve up leg, ends in triangular shaped muscle, inferior to the gluteus minimus, pyramidal shaped Muscle Origin Insertion Action Synergists Antagonists Thigh (Anterior) Tibial tuberosity of tibia Extension of knee ( Sartorius (exception) -Longest muscle, runs obliquely across anterior surface of thigh -“Indian style” sitting Anterior superior iliac spine Medial proximal tibia Flexion of Knee Biceps femoris -Semimembranosus -Semitendinosus -Gracilis -Hamstrings -Short head biceps femoris -Adductor magnus -Gluteus maximus Abduction at Hip -Gluteal Muscles -Adductor magnus -Adductor longus -Gracilis Lateral rotation at Hip -Gluteus Maximus -Adductors -Gracilis Flexion at Hip --Adductor longus -Rectus femoris -Iliopsoas --Hamstrings -Adductor magnus Quadriceps Femoris -Rectus femoris -Vastus muscles (3) Tibial tuberosity via patellar tendon Extension of knee - -Biceps femoris - Semimembranosus
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