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Anatomy Blk 4 wk 3 Gluteal region
Medical school anatomy class
29
Anatomy
Graduate
11/29/2010

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Cards

Term
At what vertebral lvl is the iliac crest
Definition
L4-L5
Term
What innervates the gluteus maximus?
Definition
The inferior gluteal nerve (S1)
Term
What is the origin of the long and short head of the biceps femoris?
Definition
long head: ischial tuberosity; short head: linea aspera
Term
Innervation of the long and short head of biceps femoris
Definition
long head: tibial division of sciatic nerve; short head: fibular division of sciatic nerve
Term
Innervation of semitendinosis and semimembranosis?
Definition
Tibial division of sciatic nerve
Term
What is the primary abductor of the thigh?
Definition
Gluteus medius
Term
What is the innervation of the gluteus medius?
Definition
superior gluteal nerve (L5)
Term
What results from weakness in the gluteus medius?
Definition
Trendelenburg gait
Term
Innervation of gluteus minimus
Definition
superior gluteal nerve
Term
What does the sciatic nerve pass btween?
Definition
Piriformis and superior gemellus
Term
Innervation of piriformis?
Definition
Ventral rami of S1,2, and 3
Term
Innervation of obturator internus
Definition
nerve to obturator (L5, S1-2)
Term
Innervation of superior gemelli
Definition
nerve to obturator internus
Term
innervation of inferior gemelli
Definition
nerve to quadratus femoris
Term
innervation to quadratus femoris
Definition
nerve to quadratus femoris
Term
What is the only deep gluteal nerve that is superior to the piriformis?
Definition
superior gluteal nerve
Term
What spinal levels make up the sciatic nerve
Definition
L4-5; S1,2,3
Term
What does the sciatic nerve supply in the gluteal region?
Definition
nothing
Term
What are the two nerves that make up the sciatic nerve?
Definition
tibial and peroneal nerve
Term
Action of gluteus maximus
Definition
Primary hip extensor, lateral rotation of thigh, raises trunk from seated or flexed postition
Term
Three mm of hamstring
Definition
Biceps femoris, semitendinosis, and semimembranosus
Term
Action of the hamstrings
Definition
extensors of thigh and flexors of leg
Term
Action of gluteus medius
Definition
Primary abductor, tilts pelvis, flexor and medial rotator, and extensor and lateral rotator
Term
Action of gluteus minimus
Definition
secondary abductor and medial rotator of thigh (more of a rotator than gluteus medius)
Term
Action of piriformis
Definition
lateral rotator, also abducts a flexed thigh (turning leg out while sitting)
Term
Action of obturator internus
Definition
laterally rotates an extended thigh; abducts flexed thigh
Term
action of superior and inferior gemellis
Definition
laterally rotates extended thigh and abducts flexed thigh
Term
Action of quadratus femoris
Definition
lateral rotation
Term
Action of quadratus femoris
Definition
lateral rotation
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