Muscle O/I/A/I Facts

Question 1

How many muscles are innervated by the superior gluteal nerve? List them

Answer 1

3
Gluteus medius
Gluteus minimus
Tensor fascia latae

Question 2

How many muscles insert on the greater trochanter? List them

Answer 2

7! ^_^
* gluteus medius
* gluteus minimus
* piriformis
* superior gemellus
* obturator internus
* inferior gemellus
* vastus lateralis

Question 3

What muscles extends over both the hip and knee joints? Consider all compartments

Answer 3

Anteriorly: Rectus femoris, sartorius

Medial compartment: gracilis

Posteriorly: biceps femoris, semitendinosus, semimembranosus, hamstring portion of adductor magnus

Question 4

What forms the pes anserius? Where is it?

Answer 4

sartorius, gracilis, semitendinosus tendon

medial surface of tibia

Question 5

Which adductor is innervated by the femoral nerve?

Answer 5

Pectineus

Question 6

What muscles does the obturator nerve innervate?

Answer 6

adductors - 5 muscles total

Obtutator externus
Adductor brevis
Adductor longus
Adductor Magnus adductor portion
Gracilis

Question 7

If the femoral nerve is cut, what would be the consequences?

Answer 7

Abolished leg extension
Weak hip flexion (psoas major still innervated), hip adduction, hip external rotation, weak internal rotation of leg (sartorius denervated)

Loss of sensation in medial leg, inner calf, arch of foot (saphenous nerve branch)