Lecture 16

Question 1

rectus femoris action

Answer 1

knee extension
steadies hip joint
helps iliopsoas flex hip joint

Question 2

rectus femoris PA

Answer 2

anterior inferior iliac spine
ilium

Question 3

rectus femoris DA

Answer 3

quadriceps tendon to tibial tuberosity via patellar ligament

Question 4

rectus femoris nerve innervation

Answer 4

femoral nerve L2, L3, L4

Question 5

vastus lateralis action

Answer 5

knee extension

Question 6

vastus lateralis PA

Answer 6

greater trochanter
lateral lip of linea aspera

Question 7

vastus lateralis DA

Answer 7

quadriceps tendon to tibial tuberosity via patellar ligament
also attach to tibia and patella via aponeuroses (medial and lateral patellar retinacula)

Question 8

vastus lateralis nerve innervation

Answer 8

femoral nerve L2, L3, L4

Question 9

vastus medialis action

Answer 9

knee extension

Question 10

vastus medialis PA

Answer 10

intertrochanteric line
medial lip of linea aspera

Question 11

vastus medialis DA

Answer 11

quadriceps tendon to tibial tuberosity via patellar ligament
also attach to tibia and patella via aponeuroses (medial and lateral patellar retinacula)

Question 12

vastus medialis nerve innervation

Answer 12

femoral nerve L2, L3, L4

Question 13

vastus intermedius action

Answer 13

knee extension

Question 14

vastus intermedius PA

Answer 14

anterior and lateral femoral shaft

Question 15

vastus intermedius DA

Answer 15

quadriceps tendon to tibial tuberosity via patellar ligament

Question 16

vastus intermedius nerve innervation

Answer 16

femoral nerve L2, L3, L4

Question 17

semitendinosus action

Answer 17

hip extension
knee flexion
knee medial rotation when flexed
when hip and knee are flexed (sitting), can extend trunk at hip (to rise)

Question 18

semitendinosus PA

Answer 18

ischial tuberosity

Question 19

semitendinosus DA

Answer 19

pes anserine of tibia

Question 20

semitendinosus nerve innervation

Answer 20

tibial division of sciatic nerve L5, S1, S2

Question 21

semimembranosus action

Answer 21

hip extension
knee flexion
knee medial rotation when flexed
when hip and knee are flexed (sitting), can extend trunk at hip (to rise)

Question 22

semimembranosus PA

Answer 22

ischial tuberosity

Question 23

semimembranosus DA

Answer 23

posterior medial tibial condyle
reflected attachment forms oblique popliteal ligament (to lateral femoral condyle)

Question 24

semimembranosus nerve innervation

Answer 24

tibial division of sciatic nerve L5, S1, S2

Question 25

biceps femoris action

Answer 25

knee flexion
knee lateral rotation when flexed

long head only: hip extension

Question 26

biceps femoris PA

Answer 26

long head: ischial tuberosity
short head: linea aspera, lateral supracondylar line

Question 27

biceps femoris DA

Answer 27

lateral side of fibular head (tendon is split at this site by LCL of knee)

Question 28

biceps femoris nerve innervation

Answer 28

long head: tibial division of sciatic nerve L5, S1, S2
short head: common fibular division of sciatic nerve L5, S1, S2