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28 Cards in this Set
- Front
- Back
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The chief cutaneous nerve supply of the buttock is provided by what?
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Three sets of cluneal nerves
Superior Cluneal nerves Inferior cluneal nerves Middle cluneal nerves |
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The superior cluneal nerves are are part of what?
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lateral branches of dorsal primary rami of L1-L3
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The middle cluneal nerves are part of what?
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of the lateral branches of dorsal primary rami of S1-S3
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The inferior cluneal nerves are part of what?
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Are branches of the posterior femoral cutaneous nerve
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The skin in the gluteal region is innervated by serveral nerves such as what?
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Lateral cutaneous branches of T12 and the iliohypogastric L1
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What is the relatively thick superficial layer of fat on the buttocks?
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The Superficial fascia
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What is the superficial fascia of the buttocks continuous with?
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Superficial fascia of the back, abdomen, perineum, and the thigh
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Where is the deep fascia of the gluteus maximus attached to?
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above to the crest of the ilium and the sacrrum
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What does the deep fascia cover?
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It covers the gluteus maximus and the gluteus medius and it can be traced laterally or inferiorly to become continuous with the fascia lata of the thigh
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Where do the gluteus muscles originate from?
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They originate on the os coxae and sacrum and insert on the upper portion of the femur
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What are the gluteal muscles responsible for?
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Extension, abduction, medial and lateral rotation of the thigh
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What holds the pelvis stable on one leg while walking?
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Gluteus medius and the gluteus minimus
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What three gluteal muscles are innervated by the Superior gluteal nerve?
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Gluteus medius
Gluteus minimus Tensor Fasciae Lata |
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Which gluteal muscle is innervated by the inferior gluteal nerve?
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Gluteus maximus
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Which gluteal muscle is innervated by the nerve to the piriformis?
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Piriformis
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The Sciatic nerve divides into what to divisions?
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Tibial division and the Peroneal Division
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What 4 muscles does the Tibial division of the sciatic nerve innervate?
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Long head of the Biceps Femoris
Semitendinosis Semimembranosis Adductor Magnus |
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What muscle does the Peroneal division innervate?
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Short head of the biceps femoris
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What does the tibial branch of the sciatic nerve eventually become?
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The tibial nerve
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What nerve does the peroneal division eventually become?
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The common peroneal nerve
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The gluteal region is nourished by branches of what artery?
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The internal iliac artery
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The superior gluteal artery exits the pelvis via what to enter the buttocks?
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The greater sciatic foramen
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What does the superior gluteal artery lie between?
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Between the piriformis (below) and the gluteus medius and minimus (above).
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The superior gluteal artery sends a superficial branch to where?
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into the overlying gluteus maximus and then divides into two deep branches which are located between the gluteus medius and the gluteus minimus
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The deep branches of the superior gluteal artery supply what?
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Gluteus medius, gluteus minimus and the Tensor fascia lata
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The inferior gluteal artery enters the buttocks below the piriformis to supply what?
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Gluteus maximus, obturator internus, gemelli, quadratus femoris, and the superior part of the hamstring muscles.
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The inferior gluteal artery sends an unamed branch where?
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laterally and downward to anastomose with other vessels (medial and lateral femoral circumflex arteries and the first perforating branch of the profunda femoris) to form the cruciate anastomosis in the hip region
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What blood supply is the piriformis supplied with?
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With arterial branches from both the superior and the inferior gluteal arteries
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