MM of Anterior and Medial Femoral Compartments

Question 1

What are the anterior femoral mm

Answer 1

Iliopsoas, sartorius, quadriceps femoris and articularis genu

Question 2

origin and insertion of psoas major

Answer 2

origin: anterior surfaces of bodies and transverse processes of last thoracic and all lumbar vertebrae
insertion: lesser trochanter of femur

Question 3

action of psoas major

Answer 3

flexes and laterally rotates thigh

Question 4

what innervates psoas major

Answer 4

ventral rami of L1 L2 L3

Question 5

origin and insertion of iliacus m

Answer 5

origin: iliac fossa
insertion: with psoas major to lesser trochanter

Question 6

action of iliacus m

Answer 6

flexion and lateral rotation of thigh

Question 7

what innervates iliacus m

Answer 7

femoral n L2,L3

Question 8

origin and insertion of sartorius

Answer 8

origin: ASIS
insertion: medial tibia below condyle- pes anserinus

Question 9

what is the action of sartorius

Answer 9

flexion leg and rotates it medially
flexes thigh and rotates laterally
ABducts lower limb when knee is locked

Question 10

what inn sartorius

Answer 10

femoral n

Question 11

What are the quadriceps

Answer 11

Rectus femoris
vastus lateralis
vastus medialis
vastus intermedius

Question 12

origin and insertion of Rectus femoris

Answer 12

origin: straight head from AIIS, reflected from superior brim of acetabulum
insertion: superior surface patella, to tibial tuberosity via ligament

Question 13

origin and insertion of vastus lateralis

Answer 13

origin: anterolateral surface of most of the femur
insertion: lateral border of patella: to tibial tuberosity via ligament

Question 14

origin and insertion of vastus medialis

Answer 14

origin: anteriomedial surface of most of femur
insertion: medial border of patella- to tibial tuberosity via ligament

Question 15

what is the origin and insertion of vastus intermedius

Answer 15

origin: most of anterior surface of femur
insertion: deep surface of tendon of rectus femoris and other vastus mm via aponeurosis

Question 16

what is the action of rectus femoris

Answer 16

flex thigh and extend leg

Question 17

what is the action of vastus lateralis

Answer 17

extend leg

Question 18

action of vastus medialis

Answer 18

extend leg: assist in maintaining proper patellar tracking

Question 19

action of vastus intermedius

Answer 19

extend leg

Question 20

what inn quadriceps femoris

Answer 20

femoral n

Question 21

Where is the articularis genu

Answer 21

deepest portion of vastus intermedius

Question 22

origin insertion of articularis genu

Answer 22

origin: lower anterior surface of femur
insertion: upper portion of synovial membrane of knee joint

Question 23

what is the action of articularis genu

Answer 23

prevens synovial membrane from becoming trapped between patella and femur when the leg is extended

Question 24

what inn articularis genu

Answer 24

femoral n

Question 25

What are the medial femoral mm

Answer 25

Pectineus, ADductor longus, ADductor brevis, ADductor magnus, Gracilis, Obturator externus

Question 26

origin and insertion of pectineus

Answer 26

origin: superior pubic ramus (pectineal line of pubis) insertion: posterior femur below lesser trochanter (pectineal line of femur)

Question 27

action of pectineus

Answer 27

ADduction, flexion and assists rotation of thigh

Question 28

inn of pectineus

Answer 28

femoral n, obturator n

Question 29

origin and insertion of ADductor longus

Answer 29

origin: front of pubis insertion: middle portion of medial lip of linea aspera

Question 30

origin and insertion of ADductor brevis

Answer 30

origin: inferior pubic ramus insertion: upper one half of medial lip of line aspera

Question 31

action of ADductor longus and brevis

Answer 31

ADduction, flexion and assists in rotation of thigh

Question 32

What inn both ADductor longus and brevis

Answer 32

anterior division of obturator n

Question 33

origin and insertion of ADductor magnus

Answer 33

origin: ischiopubic ramus insertion: medial portion of femur below lesser trochanter to ADductor tubercle

Question 34

what is the action of ADductor magnus

Answer 34

entire m adducts thigh proximal portion adducts, felxes and assists in rotation distal portion adducts and extends and assists in rotation

Question 35

what inn the ADductor magnus

Answer 35

proximal portion- obturator (posterior division) | distal portion- tibial n

Question 36

What is found within ADductor magnus

Answer 36

the adductor hiatus

Question 37

origin and insertion of gracilis

Answer 37

origin: inferior pubic ramus near symphsis insertion: medial below condyle on tibia- pes anserinus

Question 38

what is the action of gracilis

Answer 38

adducts thigh, flexes and medially rotates the leg

Question 39

what innervates gracilis

Answer 39

obturator n (anterior division)

Question 40

origin and insertion of obturator externus

Answer 40

origin: outer surface of obturator membrane and outer margins of the obturator foramen insertion: trochanteric fossa

Question 41

what is the action of obturator externus

Answer 41

lateral rotation of thigh

Question 42

what innervates obturator externus

Answer 42

obturator n (posterior division)