Leg Muscles

Question 1

Quadriceps Femoris

Answer 1

Vastus Lateralis
Vastus Intermedius
Vastus Medials
Rectum Femoris

Question 2

Vastus Lateralis

Answer 2

• Origin - Femur, greater trochanter
• Insertion - quadriceps tendon into patella
• Action - extend knee, can displace patella

Question 3

Vastus Intermedius

Answer 3

• Origin - Femur, anterior, lateral
• Insertion - quadriceps tendon into patella
• Action - extend knee

Question 4

Vastus Medialis

Answer 4

• Origin - Femur
• Insertion - quadriceps tendon into patella
• Action - extend knee

Question 5

Rectus Femoris

Answer 5

• Origin - ilium, anterior inferior iliac spine
• Insertion - quadriceps tendon into patella
• Action - extend knee, flex hip

Question 6

Hamstrings

Answer 6

Semimembranosus
Semitendinosus
Bicep Femoris

Question 7

Semimembranosus

Answer 7

• Origin - ischium
• Insertion - medial tibia
• Action - flex knee

Question 8

Semitendinosus

Answer 8

• Origin - ischium
• Insertion - medial tibia
• Action flex Knee

Question 9

Bicep Femoris

Answer 9

• Origin - ischium and femur
• Insertion - Fibula
• Action - flex knee

Question 10

Sartorius

Answer 10

• Origin - ilium, anterior superior
• Insertion - medial tibia
• Action - flex hip, flex knee, laterally rotate hip

Question 11

Gastrocnemius

Answer 11

• Origin - medial and lateral condyles of the femur
• Insertion - Calcaneal tendon
• Action - plantarflexion of foot

Question 12

Soleus

Answer 12

• Origin - Proximal fibula and tibia
• Insertion - Calcaneus via calcaneal tendon
• Action - plantarflexion of foot

Question 13

Tibialis anterior

Answer 13

• Origin - Lateral Tibia
• Insertion - Tarsals and metatarsals
• Action - Strongest dorsiflexor, inversion of foot, adduction of the foot