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24 Cards in this Set

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The iliac crest is between:
L4 and L5
Over what joint does the G max attach?
Sacroiliac joint
What n innervates G max? What artery?
Inferior gluteal n and artery
What are the three main muscles that make up the hamstrings?
1. Biceps femoris
2. Semitendinosus
3. Semimembranous
The long head of the biceps femoris (medial to short head) originates from:
Inserts at:
Innervated by:
1. Ischeal tuberosity
2. Inserts head of fibula
3. Innervated by tibial portion of sciatic n
The long head of the biceps femoris originates from:
Inserts at:?
Innervated by:
1. Linea aspera
2. ?
3. Fibular portion of sciatic n
The semitendinosus m
1. Inserts
2. Originates
3. Innervated by
1. Medial tibia
2. Ischeal tuberosity
3. Tibial portion of sciatic n
The semimembranosus m
1. Inserts
2. Originates
3. Innervated by
1. Medial tibial condyle
2. Ischeal tuberosity
3. Tibial portion of sciatic n
Gluteus Medius:
1. Origin
2. Insertion
3. Innervation
1. Ileum
2. Lateral surface of greater trochanter
3. Innervation by superior gluteal n
Gluteus Minimus
1. Origin
2. Insertion
3. Innervation
What type of movement does it do?
1. Ileum
2. Anterior surface of greater trochanter
3. Innervation by superior gluteal n
It is an abductor
Piriformis:
1. Origin
2. Insertion
3. Innervation
What movement is it responsible for?
1. Anterior surface of sacrum
2. Superior border of greater trochanter
3. Ventral rami S1 and S2
It will rotate the thigh laterally and abduct the flexed thigh.
Obturator Internus
1. Origin
2. Insertion
3. Innervation
How does it move?
How does it leave the pelvis?
1. Obturator membrane and surrounding bones
2. Medial surface of greater trochanter
3. Obturator internus (L5, S1-2)
Lateral rotation of extended, abduction of flexed thigh
Leave pelvis through lesser sciatic foramen.
Superior Gemelli
1. Origin
2. Insertion
3. Innervation
How does it move?
1. Ischeal spine
2. Obturator internus tendon
3. Innervation by nerve to obturator internus
Lateral rotation
Inferior Gemelli
1. Origin
2. Insertion
3. Innervation
How does it move?
1. Ischeal spine
2. Obturator internus tendon
3. Innervation by nerve to quadratus femoris
Lateral rotation
Quadratus Femoris
1. Origin
2. Insertion
3. Innervations
How does it move??
1. Lateral border of ischeal tuberosity
2. Quadrate tubercle on intertrochanteric crest of femur
3. Nerve to quadratus femoris
Lateral rotation
Describe where the Superior, Middle, and Inferior Cluneal nn originate and what they innervate.
1. Superior is from dorsal rami L1-3 and innervate the superior 2/3 of the butt
2. Middle comes from dorsal rami S1-3 and innervate the sacrum
3. Inferior comes from the ventral rami and innervate the lower 1/3 of the butt
Deep gluteal nerves are branches of the: 1
They leave the pelvis through the: 2
They are inferior to the piriformis except: 3
1. Sacral plexus
2. Greater sciatic foramen
3. Superior gluteal n
Describe the sciatic nerve:
1. What is its course
2. What does it supply in gluteal region
3. The ventral rami of:
4. There are two parts in common sheath - what are they and what rami are they from?
1. Descends bn ischeal tuberosity and greater trochanter
2. Does not supply any structures in gluteal region
3. Ventral rami of L4, L5, S1-3
4. Tibial (L4, L5, S1-3); Common peroneal (fibular) (L4, L5, S1-2)
Posterior Femoral Cutaneous N:
1. What does it supply
2. What are its post/ant division roots
3. How does it leave the pelvis?
4. What does it descend between?
1. Supplies skin from perineum to proximal leg
2. Posterior divisions of S1 and S2; Anterior divisions of S2 and S3
3. Leaves pelvis with inferior gluteal and sciatic n below piriformis
4. Descend bn gluteus maximus and sciatic n
Nerve to Quadratus Femoris
1. Where does it originate?
2. How does it leave the pelvis?
3. In addition to the quadratus, what does it innervate?
1. Ventral rami L4, L5, S1
2. Leaves pelvis deep to sciatic n and obturator internus
3. Also innervates inferior gemellus.
Nerve to Obturator Internus:
1. What are the roots?
2. What does it run next to?
3. What is its course and what does it supply?
4. How does it run
1. Anterior divisions ventral rami L5, S1-2
2. Runs medial to sciatic n
3. Supplies superior gemellus and then reenters the pelvis through the lesser sciatic foramen to supply the obturator internus.
Pudendal N:
1. Divisions:
2. How does it run?
3. What does it supply?
1. Anterior divisions of ventral rami S2-4
2. Passes lateral to the sacrospinous ligament and reenters pelvis through lesser sciatic foramen
3. Supplies structures in perineum
All artery branches of the gluteal region are from:
Internal iliac artery.
What is the largest branch of the internal iliac artery?
Superior gluteal artery