Knee joint

Question 1

Origin of vastus intermedius?

Answer 1

Anterior and lateral surfaces of femoral shaft

Question 2

Insertion of vastus intermedius?

Answer 2

Patella via quadriceps tendon

Question 3

Action of vastus intermedius?

Answer 3

Knee extension

Question 4

Innervation of vastus intermedius?

Answer 4

Femoral nerve (L2-L4)

Question 5

Origin of vastus medialis?

Answer 5

Medial lip of linear aspera of femur

Question 6

Insertion of vastus medialis?

Answer 6

Patella via the quadriceps tendon

Question 7

Action of vastus medialis?

Answer 7

Knee extension

Question 8

Innervation of vastus medialis?

Answer 8

Femoral nerve (L2-L4)

Question 9

Origin of vastus lateralis?

Answer 9

Greater trochanter + Lateral lip of linear aspera

Question 10

Insertion of vastus lateralis?

Answer 10

Patella via the quadriceps tendon, then the tibial tuberosity via the patellar ligament

Question 11

Action of vastus lateralis?

Answer 11

Knee extension

Question 12

Innervation of vastus lateralis?

Answer 12

Femoral nerve (L2-L4)

Question 13

Origin of rectus femoris?

Answer 13

AIIS

Question 14

Insertion of rectus femoris?

Answer 14

Patella via the quadriceps tendon

Question 15

Action of rectus femoris?

Answer 15

Knee extension, also involved in flexion of the hip

Question 16

Innervation of rectus femoris?

Answer 16

Femoral nerve (L2-L4)

Question 17

Origin of articularis genus?

Answer 17

Distal surface of anterior femur

Question 18

Insertion of articularis genus?

Answer 18

Suprapatellar bursae

Question 19

Action of articularis genus?

Answer 19

Moves the suprapatellar bursae out the way during knee extension to prevent abrasion

Question 20

Innervation of articularis genus?

Answer 20

Femoral nerve (L2-L4)

Question 21

Origin of bicep femoris?

Answer 21

Long head: Ischial tuberosity
Short head: lateral lip of linear aspera

Question 22

Insertion of bicep femoris?

Answer 22

Long head: Lateral condyle of tibia
Short head: Head of fibula

Question 23

Action of bicep femoris?

Answer 23

Knee flexion, hip extension

Question 24

Innervation of bicep femoris?

Answer 24

Long head: Tibial division of sciatic nerve (L5-S1)
Short head: Fibular division of sciatic nerve (L5-S1)

Question 25

Origin of semitendinosus?

Answer 25

Ischial tuberosity

Question 26

Insertion of semitendinosus?

Answer 26

Medial surface of proximal tibia

Question 27

Action of semitendinosus?

Answer 27

Knee flexion, hip extension

Question 28

Innervation of semitendinosus?

Answer 28

Sciatic nerve (L5-S2)

Question 29

Origin of semimembranosus?

Answer 29

Ischial tuberosity

Question 30

Insertion of semimembranosus?

Answer 30

Medial condyle of tibia

Question 31

Action of semimembranosus?

Answer 31

Knee flexion, hip extension

Question 32

Innervation of semimembranosus?

Answer 32

Sciatic nerve (L5-S2)

Question 33

Origin of popliteus?

Answer 33

Lateral condyle of femur

Question 34

Insertion of popliteus?

Answer 34

Posteromedial aspect of proximal tibia

Question 35

Action of popliteus?

Answer 35

Knee flexion and medially rotates the tibia on the femur during knee unlocking

Question 36

Innervation of popliteus?

Answer 36

Tibial nerve (L5)