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Gluteal Post Thigh

module 12 anatomy

QuestionAnswer
Gluteus Maximus Origin ilium posterior and dorsal surface of sacrum
Gluteus Maximus Insertion lateral condyle of tibia, gluteal tuberosity of femur
Gluteus Maximus Nerve inferior gluteal nerve (L5, S1, S2)
Gluteus Maximus Action extends thigh, assists lateral rotation
Gluteus Medius Origin ext surface of ilium bw anterior and posterior gluteal lines
Gluteus Medius Insertion lateral surface of greater trochanter of femur
Gluteus Medius Nerve superior gluteal nerve (L5, S1) (same as gluteus minimus)
Gluteus Medius Action ABducts and laterally rotates thigh; keeps pelvis level when opposite leg is raised
Gluteus Minimus Origin ext surface of ilium bw anterior surface of ilium bw ant and inf gluteal lines
Gluteus Minimus Insertion anterior surface of greater trochanter of femur
Gluteus Minimus Nerve Superior gluteal nerve (L5, S1)
Gluteus Minimus Action ABducts and medially rotates thigh; keeps pelvis level when opposite leg raised
Piriformis Origin anterior surface of sacrum and sacrotuberous ligament
Piriformis Insertion piriformis fossa
Piriformis Nerve branches of ventral rami of S1, S2
Piriformis Action Laterally rotates extended thigh; ABducts flexed thigh; steady femoral head in acetabulum
Obturator Internus Origin pelvic surface of obturator membrane
Obturator Internus Insertion trochanteric fossa of femur
Obturator Internus Nerve nerve to obturator internus (L5, S1)
Obturator Internus Action Lateral rotation extended thigh, ABduction in flexed thigh, steady femoral head in acetabulum
Gemellus Superior Origin Ischial Spine
Gemellus Superior Insertion blends with obturator internus tendo to attach to greater trochanter of femur
Gemellus Superior Nerve Nerve to obturator internus (L5, S1)
Gemellus Superior Action Laterally rotates extended thigh; abducts flexed thigh; steadies femoral head in acetabulum
Gemellus Inferior Origin ischial tuberosity
Gemellus Inferior Insertion gemellus blends with obturator internus tendon and attaches to greater trochanter of femur
Gemellus Inferior Nerve nerve to quadratus femoris (L5, S1)
Gemellus Inferior Action laterally rotates extended thigh and abducts flexed thigh; steadies femoral head in acetabulum
Quadratus Femoris Origin lateral border of ischial tuberosity
Quadratus Femoris Insertion quardate tubercle on introchanteric crest of femur and area inferior to it
Quadratus Femoris Nerve nerve to quadratus femoris (L5, S1)
Quadratus Femoris Action laterally rotates extended thigh and abducts flexed thigh; steadies femoral head in acetabulum
Obturator Externus Origin margins of obturator foramen and obturator membrane
Obturator Externus Insertion trochanteric fossa of femur
Obturator Externus Nerve obturator nerve (L3, L4)
Obturator Externus Action laterally rotates extended thigh and abducts flexed thigh; steady femoral head in acetabulum
Biceps Femoris - Long Head Origin ischial tuberosity
Biceps Femoris - Long Head Insertion lateral side of head of fibula; tendon is split by fibular collateral knee ligament
Biceps Femoris - Long Head Nerve sciatic nerve (L5, S1, S2)
Biceps Femoris - Long Head Action flexes leg and rotates it laterally when knee flexed; extends thigh at hip joint
Semitendinosus Origin ischial tuberosity
Semitendinosus Insertion medial surface of superior part of tibia
Semitendinosus Nerve sciatic nerve (L5, S1, S2)
Semitendinosus Action extend thigh; flex leg and rotate it medially with knee flexed
Semimembranosus Origin ischial tuberosity
Semimembranosus Insertion posterior part of medial tibial condyle; reflective attachment forms oblique popliteal ligament to lateral femoral condyle
Semimembranosus Nerve Sciatic nerve (L5, S1, S2)
Semimembranosus Action extends thigh, flexes leg and rotate it medially with knee flexed
Adductor Magnus Origin adductor part: inferior ramus of pubis, ramus of ischium; hamstring part: ischial tuberosity
Adductor Magnus Insertion adductor part: gluteal tuberosity, linea aspera, medial supracondylar line hamstring part: adductor tubercle of femur
Adductor Magnus Nerve adductor part: obturator nerve (L2, L3, L4) hamstring part: sciatic nerve (L4)
Adductor Magnus Action adductor part: adducts thigh; adductor part; flexes thigh hamstring part: extends thigh
What are the muscles of the gluteus region? gluteus maximus, gluteus minimus, gluteus medius, piriformis, obturnator internus, superior gemellus, inferior gemellus, quadratus femoris, obturator exturnus
What are the muscles of the hamstrings? biceps femoris - long head, biceps femoris - short head, semimembranosus, semitendinosus
Which of the hamstrings does not cross both the hip and knee? biceps femoris - short head
Which of the hamstrings is not innervated by the tibial division of the sciatic nerve? biceps femoris - short head
What muscles laterally rotate extended thigh, abduct flexed thigh, and steady femoral head in acetabulum? Piriformis, obturator internus, gemellus superior and gemellus inferior
Biceps Femoris - Short Head Origin linear aspera and lateral and lateral supracondylar line of femur
Biceps Femoris - Short Head Insertion lateral side of head of fibula; tendon is split by fibular collateral knee ligament
Biceps Femoris - Short Head Nerve sciatic nerve - L5, S1, S2
Biceps Femoris - Short Head Action flexes leg and rotates it laterally
Created by: wrenlette
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