OIA: Lower Muscles, Knee Joints, Core

Question 1

OIA: Tibialis Anterior

Answer 1

Origin: lateral surface of tibia
Insertion: medial cuneiform and 1st metatarsal
Action: dorsiflexes and inverts foot

Question 2

OIA: Semitendinosus

Answer 2

Origin: ischial tuberosity
Insertion: pes anserinus
Action: flexes knee; extends hip

Question 3

OIA: Gluteus Medius

Answer 3

Origin: gluteal surface
Insertion: greater trochanter
Action: abducts hip; medially and laterally rotates hip

Question 4

OIA: Flexor Hallucis Longus

Answer 4

Origin: posterior surface of fibula
Insertion: 1st digit
Action: flexes 1st digit

Question 5

OIA: Gastrocnemius

Answer 5

Origin: lateral and medial condyles of the femur
Insertion: calcaneal tuberosity via calcaneal tendon
Action: flexes knee; plantar flexes foot

Question 6

OIA: Gracilis

Answer 6

Origin: ischiopubic ramus
Insertion: pes anserinus
Action: adducts hip; flexes knee

Question 7

Innervation: Lumbosacral Plexus

Answer 7

lower limb

Question 8

OIA: Sartorius

Answer 8

Origin: anterior superior iliac spine
Insertion: pes anserinus
Action: flexes and laterally rotates hip; flexes knee

Question 9

Innervation: Tibial Nerve

Answer 9

posterior lower leg

Question 10

Innervation: Sciatic Nerve

Answer 10

posterior thigh

Question 11

OIA: Fibularis Longus

Answer 11

Origin: lateral surface of fibula
Insertion: medial cuneiform and 1st metatarsal
Action: plantar flexes and everts foot

Question 12

Innervation: Common Fibular Nerve

Answer 12

lateral and anterior lower leg

Question 13

OIA: Rectus Abdominis

Answer 13

Origin: pubic crest and pubic tubercle
Insertion: costal cartilage of ribs 5-7; xiphoid process
Action: flexes spine

Question 14

Innervation: Femoral Nerve

Answer 14

anterior thigh