Muscles

Question 1

Rectus Femoris

Answer 1

Quadriceps 
Origin: anterior inferior iliac spine (AIIS)
Insertion: patella/tibial tuberosity
Action: extends leg flexes thigh
Innervation: femoral nerve

Question 2

Vastus Medialis

Answer 2

Origin: linea aspera
Insertion: patella/tibial tuberosity
Action: extends leg
Innervation: femoral nerve

Question 3

Vastus lateralis

Answer 3

Origin: linea aspera
Insertion: patella/tibial tuberosity
Action: extends knee
Innervation: femoral nerve

Question 4

Vastus intermedius

Answer 4

Origin: femur
Insertion: patella/ tibial tuberosity
Action: extends knee
Innervation: femoral nerve

Question 5

Biceps Femoris

Hamstring

Answer 5

Origin: long head: ischial tuberosity
Short head: linea aspera
Insertion: head of fibula
Action: flexes knee extends thigh
Innervation: tibial nerve

Question 6

Semitendinosus

Answer 6

Origin: ischial tuberosity
Insertion: medial surface tibia
Action: flexes leg extends thigh
Innervation: tibial nerve

Question 7

Semimembranosus

Answer 7

Origin: ischial tuberosity
Insertion: medial condyle of tibia
Action: flexes leg extends thigh
Innervation: tibial nerve

Question 8

Subscapularis

Rotator cuffs

Answer 8

Origin: subscapular fossa
Insertion: lesser tubercle of the humerus
Action: medially rotates humerus

Question 9

Supraspinatus

Rotator cuff

Answer 9

Origin: supraspinous fossa
Insertion: greater tubercle of the humerus
Action: abducts the arm

Question 10

Infraspinatus

Rotator cuffs

Answer 10

Origin: infraspinous fossa
Insertion: greater tubercle of the humerus
Action: lateral rotation of shoulder

Question 11

Teres minor

Rotator cuffs

Answer 11

Origin: axillary border of scapula
Insertion: greater tubercle of humerus
Action: laterally rotates arm/extends humerus
Innervation: axillary nerve

Question 12

Biceps brachii

Answer 12

Origin: long head: supraglenoid tubercle
Short head: coracoid process
Insertion: radial tuberosity
Action: flexes and supinates forearm/arm
Innervation: musculocutaneous nerve

Question 13

Triceps brachii

Answer 13

Origin: long head: infraglenoid tubercle
Medial head: humerus
Lateral head: humerus
Insertion: olecranon process
Action: extends forearm/arm
Innervation: radial nerve

Question 14

Gastrocnemius

Calf

Answer 14

Origin: medial head: medial condyle femur
Lateral head: lateral condyle femur
Insertion: calcaneous Achilles tendon
Action: plantar flexion of ankle/knee

Question 15

Soleus

Answer 15

Origin: posterior fibula/tibia
Insertion: Achilles tendon calcaneous
Action: plantar flexion

Question 16

Plantaris

Answer 16

Origin: distal femur
Insertion: calcaneous Achilles tendon
Action: plantar flexion flex knee

Question 17

Gluteus Maximus

Answer 17

Origin: posterior surface of sacrum
Insertion: iliotibial tract/linea aspera
Action: extends and laterally rotates thigh
Innervation: gluteal nerve

Question 18

Gluteus medius

Answer 18

Origin: posterior ilium
Insertion: greater trochanter
Action: abducts hip and medially rotates thigh
Innervation: gluteal nerve

Question 19

Gluteus minimus

Answer 19

Origin: outer surface of ilium
Insertion: greater trochanter
Action: abducts/medially rotates thigh
Innervation: gluteal nerve