Muscles: Group 3

Question 1

List the muscles that move the hip joint/thigh.

Answer 1

Anterior Thigh
- Sartorius
Medial Thigh
- Gracilis
Lateral Thigh
- Tensor fasciae latae
- Gluteus medius
- Gluteus maximus
Posterior Thigh “Hamstrings”
- Semimembranosus
- Semitendinosus
- Biceps femoris, short head
- Biceps femoris, long head

Question 2

Identify the muscle, origin, insertion, and action.
Sartorius

Answer 2

Origin: anterior superior iliac spine
Insertion: tibial tuberosity
Action: flexes and laterally rotates thigh

Question 3

Identify the muscle, origin, insertion, and action.
Gracilis

Answer 3

Origin: inferior ramus and body of pubis
Insertion: medial tibia
Action: adducts and flexes thigh

Question 4

Identify the muscle, origin, insertion, and action.
Tensor fasciae latae

Answer 4

Origin: iliac crest
Insertion: iliotibial band
Action: abducts and medially rotates thigh

Question 5

Identify the muscle, origin, insertion, and action.
Gluteus medius

Answer 5

Origin: iliac crest
Insertion: greater trochanter of femur
Action: abducts and medially rotates femur

Question 6

Identify the origin, insertion, and action.
Gluteus maximus

Answer 6

Origin: iliac crest, sacrum, and coccyx
Insertion: fascia lata and proximal femur
Action: extends and laterally rotates thigh

Question 7

Identify the muscle, origin, insertion, and action.
Semimembranosus

Answer 7

Origin: ischial tuberosity
Insertion: medial condyle of tibia
Action: flexes leg and extends thigh

Question 8

Identify the muscle, origin, insertion, and action.
Semitendinosus

Answer 8

Origin: ischial tuberosity
Insertion: medial condyle of tibia
Action: flexes leg and extends thigh

Question 9

Identify the muscle, origin, insertion, and action.
Biceps femoris, short head

Answer 9

Origin: linea aspera (femur)
Insertion: head of fibula, lateral condyle of tibia
Action: flexes leg, laterally rotates leg

Question 10

Identify the muscle, origin, insertion, and action.
Biceps femoris, long head

Answer 10

Origin: ischial tuberosity
Insertion: head of fibula, lateral condyle tibia
Action: extends thigh and flexes leg

Question 11

List the thigh muscles that move the knee joint/leg.

Answer 11

Anterior Thigh/Quads
- Vastus intermedius
- Vastus medialis
- Vastus lateralis
- Rectus femoris

Question 12

Identify the muscle, origin, insertion, and action.
Vastus Intermedius

Answer 12

Origin: femur
Insertion: tibial tuberosity
Action: extends leg

Question 13

Identify the muscle, origin, insertion, and action.
Vastus medialis

Answer 13

Origin: intertrochanteric line and linea aspera of femur
Insertion: tibial tuberosity
Action: extends leg

Question 14

Identify the muscle, origin, insertion, and action.
Vastus lateralis

Answer 14

Origin: greater trochanter and linea aspera of femur
Insertion: tibial tuberosity
Action: extends leg

Question 15

Identify the muscle, origin, insertion, and action.
Rectus femoris

Answer 15

Origin: iliac spine
Insertion: tibial tuberosity
Action: flexes thigh and extends leg

Question 16

List the thigh muscles that move the leg.

Answer 16

Posterior compartment
- Soleus
- Gastrocnemius
Anterior compartment
- Tibialis anterior
Lateral Compartment
- Fibularis longus

Question 17

Identify the muscle, origin, insertion, and action.
Soleus

Answer 17

Origin: proximal fibula and tibia
Insertion: calcaneus via calcaneal tendons (Achilles tendon)
Action: plantar flexes foot

Question 18

Identify the muscle, origin, insertion, and action.
Gastrocnemius

Answer 18

Origin: condyles of femur
Insertion: Achilles tendon
Action: plantar flexes foot

Question 19

Identify the muscle, origin, insertion, and action.
Tibialis anterior

Answer 19

Origin: proximal tibia
Insertion: medial cuneiform and first metatarsal
Action: dorsiflexes and inverts foot

Question 20

Identify the muscle, origin, insertion, and action.
Fibularis longus

Answer 20

Origin: fibula and lateral condyle of tibia
Insertion: medial cuneiform and first metatarsal
Action: plantar flexes weakly