Lower Extremity Muscles

Question 1

origin for psoas major and minor

Answer 1

T12-L5 vertebral bodies, TPs and IVDs

Question 2

insertion for psoas major and minor

Answer 2

lesser trochanter

Question 3

action for psoas major and minor

Answer 3

flexes hip

Question 4

innervation for/ nerve for psoas major and minor

Answer 4

lumbar plexus

Question 5

origin for iliacus

Answer 5

iliac fossa

Question 6

insertion for iliacus

Answer 6

lesser trochanter and hip capsule

Question 7

action for iliacus

Answer 7

flexes hip

Question 8

innervation/ nerve for iliacus

Answer 8

femoral nerve

Question 9

origin for gluteus maximus

Answer 9

posterior ilium, sacrum, coccyx

Question 10

insertion for gluteus maximus

Answer 10

gluteal tuberosity and iliotibial tract

Question 11

action for gluteus maximus

Answer 11

extend hips, abducts and laterally rotate thigh

Question 12

innervation/ nerve for gluteus maximus

Answer 12

inferior gluteal nerve

Question 13

origin for gluteus medius

Answer 13

posterior ilium

Question 14

insertion for gluteus medius

Answer 14

greater trochanter

Question 15

action for gluteus medius

Answer 15

abducts, medially rotates thigh, tilt pelvis toward supported side

Question 16

innervation/ nerve for gluteus medius

Answer 16

superior gluteal

Question 17

origin for tensor fasciae latae

Answer 17

ASIS

Question 18

insertion for tensor fasciae latae

Answer 18

through iliotubial tract to lateral condyle of tubia (gerdy’s tubercle)

Question 19

action for tensor fasciae latae

Answer 19

tense lateral fascia and stabilize femur on the tibia when standing. hip flexion, abduction and medial rotation. tilts pelvis

Question 20

innervation/ nerve for tensor fasciae latae

Answer 20

superior gluteal

Question 21

origin for piriformis

Answer 21

anterior sacrum

Question 22

insertion for piriformis

Answer 22

greater trochanter

Question 23

actioin for piriformis

Answer 23

lateral rotation and abduction of thigh

Question 24

innervation/ nerve for piriformis

Answer 24

S1 and S2 root

Question 25

origin for adductor longus

Answer 25

inferior ramus

Question 26

insertion for adductor longus

Answer 26

linea aspera

Question 27

action for adductor longus

Answer 27

adducts and medial rotates thigh; flexes hip

Question 28

innervation/ nerve for adductor longus

Answer 28

obturator

Question 29

origin for adductor magnus

Answer 29

adductor part; pubism ischium hamstring part; ischial tuberosity

Question 30

insertion for adductor magnus

Answer 30

adductor part; linea aspera hamstring part; adductor tubercle

Question 31

action for adductor magnus

Answer 31

adductor part; adduct and flex hip hamstring part; adduct and extend hip

Question 32

innervation/ nerve for adductor magnus

Answer 32

adductor part; obutator hamstring part; adduct and extend hip

Question 33

origin for gracilis

Answer 33

inferior ramus of pubis near symphsis

Question 34

insertion for gracilis

Answer 34

near medial condyle of tibia

Question 35

action for gracilis

Answer 35

adduct and medial rotate thigh; flex knee

Question 36

innervation/ nerve for gracilis

Answer 36

obturator

Question 37

origin for sartorius

Answer 37

ASIS

Question 38

insertion for sartorius

Answer 38

medial tibial tuberosity

Question 39

action for sartorius

Answer 39

flex hip and knee; laterally rotate thigh, internally rotate knee

Question 40

innervation/ nerve for sartorius

Answer 40

femoral

Question 41

origin for rectus femoris

Answer 41

AIIS

Question 42

insertion for rectus femoris

Answer 42

patella and onto tibial tuberosity through patellar ligament

Question 43

action for rectus femoris

Answer 43

extend knee, flexes hip

Question 44

innervation/ nerve

Answer 44

femoral

Question 45

origin for vastus lateralis

Answer 45

greater trochanter and linea aspera

Question 46

insertion for vastus lateralis

Answer 46

patella and onto tibial tuberosity through patellar ligament

Question 47

action for vastus lateralis

Answer 47

extend knee

Question 48

innervation/ nerve for vastus lateralis

Answer 48

femoral

Question 49

origin for vastus intermedius

Answer 49

anterolateral femur

Question 50

insertion for vastus intermedius

Answer 50

patella and onto tibial tuberosity through patellar ligament

Question 51

action for vastus intermedius

Answer 51

extend knee

Question 52

innervation/ nerve for vastus intermedius

Answer 52

femoral

Question 53

origin for vastus medialis

Answer 53

linea aspera

Question 54

insertion for vastus medialis

Answer 54

patella and onto tibial tuberosity through patellar ligament

Question 55

action for vastus medialis

Answer 55

extend knee

Question 56

innervation/ nerve for vastus medialis

Answer 56

femoral

Question 57

origin for semimembranosus

Answer 57

ischial tuberosity

Question 58

insertion for semimembranosus

Answer 58

medial condyle of tibia and collateral ligament

Question 59

action for semimembranosus

Answer 59

flex knee, extend hip, rotate leg medially

Question 60

innervation/ nerve for semimembranosus

Answer 60

tibial

Question 61

origin for semitendinosus

Answer 61

ischial tuberosity

Question 62

insertion for semitendinosus

Answer 62

tibia

Question 63

action for semitendinosus

Answer 63

flex knee, extend hip, medially rotate leg

Question 64

innervation/ nerve for semitendinosus

Answer 64

tibial

Question 65

origin for biceps femoris long head

Answer 65

ischia tuberosity

Question 66

origin for biceps femoris short head

Answer 66

linea aspera of femur

Question 67

insertion for biceps femoris

Answer 67

fibular head

Question 68

action for biceps femoris

Answer 68

flex knee, extend hip, laterally rotates leg

Question 69

innervation/ nerve for biceps femoris long head

Answer 69

tibial

Question 70

innervation/ nerve for biceps femoris short head

Answer 70

common fibular