Upper leg and Knee Muscles

Question 1

Rectus Femoris - Origin

Answer 1

O= Pelvis - AIIS & Above acetubaulum

Question 2

Rectus Femoris - Insertion

Answer 2

I= Patella - superior, patella ligament and into Tibia tuberosity

Question 3

Rectus Femoris - Actions

Answer 3

Knee extension
Hip flexion
Anterior Pelvic tilt

Question 4

Vastus Lateralis - Origin

Answer 4

O= Femur - Greater Trochanter and Lateral lip of linea aspera

Question 5

Vastus Lateralis - Insertion

Answer 5

I= Patella - Lateral superior aspect, patella ligament and Tibia tuberosity

Question 6

Vastus Lateralis - Action

Answer 6

Knee extension

Question 7

Vastus Medialis - Origin

Answer 7

O= Femur - Intertrochanteric line and medial lip of linea aspera

Question 8

Vastus Medialis - Insertion

Answer 8

I= Patella - medially, patella ligament, tibia tuberosity

Question 9

Vastus Medialis - Actions

Answer 9

Knee extentsion

Question 10

Vastus intermedius - Origin

Answer 10

O= Femur - anterior & lateral surface of the body

Question 11

Vastus intermedius - Insertion

Answer 11

I= Patella - superior surface, patella ligament, tibia tuberosity

Question 12

Vastus intermedius - Action

Answer 12

Knee extension

Question 13

Gastrocnemius - Origin

Answer 13

O= Femur - Medial & Lateral epicondyle

Question 14

Gastrocnemius - Insertion

Answer 14

I= Achilles tendon into posterior surface of calcaneus

Question 15

Gastrocnemius - Actions

Answer 15

Planter flexion

Assists with knee flexion

Question 16

Semitendinosus & Semimembranosus (Hamstring) - Origin

Answer 16

O= Pelvis - Ischial Tuberosity

Question 17

Semitendinosus & Semimembranosus (Hamstring) - Insertion

Answer 17

I= Tibia - medial condyle

Question 18

Semitendinosus & Semimembranosus (Hamstring) - Actions

Answer 18

Hip extension
Knee flexion
Trunk extension

Question 19

Biceps femoris - Origin - 2 heads

Answer 19

Short head
O= Femur - linea aspera

Long head
O= Pelvis - ischial tuberosity

Question 20

Biceps femoris - Insertion - 2 heads

Answer 20

Short head
I= Fibula, proximal head

Long head
I= Fibula - head

Question 21

Biceps femoris - Actions

Answer 21

Hip extension - except short head
Knee flexion
Trunk extension

Question 22

Gluteus Maximus - Origin

Answer 22

O= Pelvis - iliac crest

Sacrum

Question 23

Gluteus Maximus - Insertion

Answer 23

I= Femur - Gluteal tuberosity & IT band

Question 24

Gluteus Maximus - Actions

Answer 24

Hip extension
Hip external rotation
Trunk extension

Question 25

Tensor Fasciae Latae - Origin

Answer 25

O= Pelvis - Iliac crest, ASIS

Fascia Lata

Question 26

Tensor Fasciae Latae - Insertion

Answer 26

I= Tibia - Lateral aspect

Question 27

Tensor Fasciae Latae - Actions

Answer 27

Hip flexion
Hip abduction
Hip medial rotation
Anterior pelvic tilt