Lower Extremity 2nd Part

Question 1

Origin of the Vastus Medialis

Answer 1

Intertrochanteric line and medial lip of the line aspera of the femur

Question 2

Insertion of the Vastus Medialis

Answer 2

Patella via the Quads. tendon and tibial tuberosity via the patellar lig.

Question 3

Function of the Vastus Medialis

Answer 3

Ext. of the leg at knee joint

Question 4

Origin of the Biceps Femoris (long head and short head)

Answer 4

Long head -> Ischial tuberosity + sharing common tendon with semitendinosus and membranosus

Short head -> Linea aspera of the femur

Question 5

Insertion of the Biceps Femoris

Answer 5

Lateral surface of the head of the fib

Question 6

Function of the Biceps Femoris

Answer 6

Flex. Ext. Rota. of lower leg at knee joint + Ext. of thigh at hip joint

Question 7

Origin of Semitendinosus

Answer 7

Ischial tuberosity + sharing a common tendon with semimembranosus and biceps femoris

Question 8

Insertion of Semitendinosus

Answer 8

Medial surface of the superior shaft of the tibia via the tendon pes anserinus

Question 9

Function of the Semitendinosus

Answer 9

Ext. ; Int. Rota. of the thigh at the hip joint; stabilises the pelvis; Flex. ; Int. Rota of lower leg at knee joint

Question 10

Origin of the Semimembranosus

Answer 10

Ischial tuberosity + sharing a common tendon with semitendinosus and biceps femoris

Question 11

Insertion of the Semimembranosus

Answer 11

Medial condyle of tibia

Question 12

Function of the Semimembranosus

Answer 12

Ext. ; Int. Rota. of the thigh at the hip joint; stabilises the pelvis; Flex. ; Int. Rota. of lower leg at knee joint

Question 13

Origin of the Gracilis

Answer 13

Lower half of pubic symphisis + inferior pubic ramus + ischial ramus

Question 14

Insertion of the Gracilis

Answer 14

Medial surface of the superior shaft of the tibia via the tendon pes anserinus

Question 15

Function of the Gracilis

Answer 15

Flex. ; Adduction of thigh at hip joint; Flex. ; Int. Rota. of lower leg at knee joint

Question 16

Origin of the Pectineus

Answer 16

Superior Ramus of the pubis (pectineal line of pubis)

Question 17

Insertion of the Pectineus

Answer 17

Linea aspera of Femur; pectineal line of Femur

Question 18

Function of the Pectineus

Answer 18

Flex. ; Adduction; Ext. Rota. ; Int. Rota. of thigh ; stabilises the pelvis

Question 19

Origin of the Adductor Longus

Answer 19

Body pubis + Lateral to the pubic symphysis

Question 20

Insertion of the Adductor Longus

Answer 20

Linea aspera of femur (between vastus medialis and adductor magnus)

Question 21

Function of the Adductor longus

Answer 21

Powerful adduction; Int. Rota. of thigh

Question 22

Origin of the Adductor brevis

Answer 22

Inferior pubic ramus

Question 23

Insertion of the Adductor brevis

Answer 23

Linea aspera of femur

Question 24

Function of the Adductor brevis

Answer 24

Flex. ; Adduction; Ext. Rota. of thigh; stabilises the pelvis

Question 25

Origin of the Adductor Magnus

Answer 25

Inferior Ramus + tuberosity of ischium to inferior ramus of the pubis

Question 26

Insertion of the Adductor Magnus

Answer 26

Linea aspera and adductor tubercle on the medial condyle of the femur (epicondyle)

Question 27

Function of the Adductor Magnus

Answer 27

Flex. ; Ext; Adduction; Ext. Rota. ; Int. Rota. of thigh, stabilises the pelvis