Lecture 11 - Leg Muscles

Question 1

What are the proximal and distal attachment points of the ILIOPSOAS?

Answer 1

Proximal: anterior lumbar vertebrae
Distal: Medial: proximal femur

Question 2

What is the function of the ILIOPSOAS?

Answer 2

hip flexion

trunk flexion

Question 3

What are the 3 gluteus muscles?

Answer 3

Gluteus Maximus
Gluteus Medius
Gluteus Minimus

Question 4

What are the proximal and distal attachments of the GLUTEUS MAXIMUS?

Answer 4

Proximal: outer surface of the iluim & sacrum
Distal: Posterior, proximal femur

Question 5

What is the function of the GLUTEUS MAXIMUS? (give examples)

Answer 5

hip extension (when climbing stairs), pelvis tilkts backwards (flattening of the back)

Question 6

What are the proximal attachments of the GLUTEUS MEDIUS & MINIMUS?

Answer 6

Proximal: Outer surface of ilium
Distal: lateral proximal femur

Question 7

What is the function of the GLUTEUS MEDIUS & MINIMUS?

Answer 7

Hip abduction

Question 8

What are the attachment points of the ADDUCTORS?

Answer 8

Proximal: Pubis
Distal: Medial side of femur

Question 9

What is the function of the ADDUCTORS?

Answer 9

hip adduction

Question 10

What are the 4 muscles of the QUADRICEPS FEMORIS (QUADS)?

Answer 10

Rectus femoris
Vastus intermedius
Vastus Lateralis
Vastus Medialis

Question 11

What are the attachment points of the 3 VASTUS muscles of the QUADS?

Answer 11

Proximal: Proximal femur (all around)
Disal: anterior proximal tibia (tibial tuberosity)

Question 12

What is the function of the QUADS?

Answer 12

knee extension

Question 13

What are the extension points of the RECTUS FEMORIS muscle of the QUADS?

Answer 13

Proximal: Anterior Ilium
Distal: anterior proximal tibia (tibial tuberosity)

Question 14

What is the function of the RECTUS FEMORIS and what muscle group is it in?

Answer 14

knee extension and hip flextion.

1 of 4 quadricep muscles

Question 15

What functions do the HAMSTRINGS have?

Answer 15

hip extension
knee flexion (crosses knee)

Question 16

Which muscles move the femur and tibia on the back of the leg?

Answer 16

the hamstrings

Question 17

What are the attachment points of the HAMSTRINGS?

Answer 17

Proximal: ischial tuberosity
Distal: posterior proximal tibia, medial & lateral

Question 18

What two movements are involved in kicking a ball forward?

Answer 18

hip flexion

knee extension

Question 19

Which muscles are involved in hip flexion?

Answer 19

iliopsoas

rectus femorus

Question 20

what muscles are involved in knee extension?

Answer 20

all quads:
rectus femorus
vastus medialis
vastus lateralis
vastus intermedius

Question 21

What movements are involved in stepping up a step (lifting the leg phase)?

Answer 21

Hip flexion

knee flexion

Question 22

What muscles are involved in knee flexion?

Answer 22

hamstrings

Question 23

What movements are involved in stepping up a step (stand phase)?

Answer 23

hip extension

knee extension

Question 24

What muscles are involved in hip extension?

Answer 24

gluteus maximus

hamstrings

Question 25

What movements are involved when lifting legs up when lying on back?

Answer 25

knee extension | hip flexion

Question 26

What are the two ankle movements?

Answer 26

``` Plantar Flexion (point foot, heels raised) Dorsiflexion (toes up, heels down) ```

Question 27

What muscles are used in plantar flexion?

Answer 27

Gastrocnemius, soleus

Question 28

What muscle is used in dorsiflexion?

Answer 28

Tibialis anterior

Question 29

What are the attachment points of the TIBIALIS ANTERIOR?

Answer 29

Proximal: anterior proximal 2/3 or tibia Distal: Top of 1st metatarsal

Question 30

What are the attachment points of the GASTROCNEMIUS?

Answer 30

Proximal: posterior (medial and lateral), distal femur Distal: calcaneus

Question 31

What are the two functions of the GASTROCNEMIUS?

Answer 31

plantar flexion | knee extension

Question 32

Where is the SOLEUS located?

Answer 32

beneath the gastrocnemius

Question 33

What are the attachment points of the SOLEUS?

Answer 33

Proximal: posterior proximal tibia Distal: Calcaneus