Week 3

Question 1

What is the origin of the pectineus muscle?

Answer 1

Pectineal line of pubis (superior pubic ramus)

Question 2

Where does the pectineus muscle insert?

Answer 2

Pectineal line of femur (just below lesser trochanter on posterior aspect of femur)

Question 3

What actions does the pectineus muscle perform?

Answer 3

Adduction and flexion of hip

Question 4

What nerves innervate the pectineus muscle?

Answer 4

Femoral nerve and obturator nerve

Question 5

Adductor Longus Origin

Answer 5

Anterior surface of pubis

Question 6

Adductor Longus Insertion

Answer 6

Medial lip of linea aspera (middle 1/3)

Question 7

Adductor Longus Action

Answer 7

Adduction and flexion of hip

Question 8

Adductor Longus Innervation

Answer 8

Obturator nerve

Question 9

Adductor Brevis Origin

Answer 9

Body and inferior ramus of pubis

Question 10

Adductor Brevis Insertion

Answer 10

Medial lip of linea aspera (proximal 1/3)

Question 11

Adductor Brevis Action

Answer 11

Adduction and flexion of hip

Question 12

Adductor Brevis Innervation

Answer 12

Obturator nerve

Question 13

Gracilis Origin

Answer 13

Anterior body and inferior ramus of pubis

Question 14

Gracilis Insertion

Answer 14

Proximal anterior medial tibia (pes anserine)

Question 15

Gracilis Action

Answer 15

Adduction and flexion of hip; flexion and medial rotation of knee

Question 16

Gracilis Innervation

Answer 16

Obturator nerve

Question 17

Adductor Magnus Origin (anterior head)

Answer 17

Ischiopubic ramus

Question 18

Adductor Magnus Origin (posterior head)

Answer 18

Ischial tuberosity

Question 19

Adductor Magnus Insertion (anterior head)

Answer 19

Linea aspera

Question 20

Adductor Magnus Insertion (posterior head)

Answer 20

Adductor tubercle of femur

Question 21

Adductor Magnus Action

Answer 21

Adduction and extension of the hip; lateral rotation of thigh (anterior head)

Question 22

Adductor Magnus Innervation (anterior head)

Answer 22

Obturator nerve

Question 23

Adductor Magnus Innervation (posterior head)

Answer 23

Sciatic nerve

Question 24

Semitendinosus Origin

Answer 24

Ischial tuberosity

Question 25

Semitendinosus Insertion

Answer 25

Pes Anserine (proximal anterior medial tibia)

Question 26

Semitendinosus Action

Answer 26

Flexion of knee, extension of hip; medial rotation of knee when knee is flexed

Question 27

Semitendinosus Innervation

Answer 27

Sciatic nerve

Question 28

Biceps Femoris Origin (Long Head)

Answer 28

Ischial tuberosity

Question 29

Biceps Femoris Origin (Short Head)

Answer 29

Lateral lip of linea aspera

Question 30

Biceps Femoris Insertion

Answer 30

Head of fibula

Question 31

Biceps Femoris Action

Answer 31

Flexion of knee (both long and short); extension of hip (long head only); lateral rotation of knee when knee is flexed

Question 32

Biceps Femoris Innervation

Answer 32

Sciatic nerve

Question 33

Semimembranosus Origin

Answer 33

Ischial tuberosity

Question 34

Semimembranosus Insertion

Answer 34

Medial tibial condyle (posterior medial aspect)

Question 35

Semimembranosus Action

Answer 35

Flexion of knee, extension of hip; medial rotation of knee when knee is flexed

Question 36

Semimembranosus Innervation

Answer 36

Sciatic nerve