Muscles of the Thigh

Question 1

What is the inguinal ligament?

Answer 1

Ligament between anterior superior iliac spine and pubis

Question 2

What is the fascia lata?

Answer 2

Fibrous sheath that encircles all the muscles of the thigh, tightly binding them

Question 3

What is the iliotibial band?

Answer 3

Thickened lateral portion of the fascia lata, from the iliac crest to lateral proximal tibia

Question 4

What two muscles compose the iliopsoas?

Answer 4

Iliacus

Psoas major

Question 5

Where does the iliopsoas run?

Answer 5

Fibers from 2 different areas pass under the inguinal ligament an insert together, via a common tendon, on the lesser trochanter(femur)

Question 6

What movements does the iliopsoas allow for?

Answer 6

Allows for hip flexion, trunk flexion

Question 7

Where is the iliacus?

Answer 7

Starts in the iliac fossa; inserts w/ psoas major on lesser trochanter

Question 8

What shape is the iliacus?

Answer 8

Fan-Shaped

Question 9

Does the iliacus allows for flexion or extension?

Answer 9

Hip flexion (because it passes over the hip joint)

Question 10

Where is the psoas major?

Answer 10

From transverse processes of lumbar vertebrae; inserts w/ iliacus on lesser trochanter

Question 11

Which muscle in the iliopsoas is medial?

Answer 11

Psoas major

Question 12

What movements does the Psoas major allow for?

Answer 12

Allows for hip flexion, and trunk flexion (trunk because of L vertebrae insertion)
Allows for lateral flexion if just one side contracts

Question 13

Where is the piriformis?

Answer 13

Sacrum to greater trochanter

Question 14

What direction are the fibers of the piriformis?

Answer 14

Transverse

Question 15

The piriformis ________ rotates extended thigh

Answer 15

Laterally

Question 16

The piriformis _________ the hip joint and _______ the flexed thigh

Answer 16

Stabilizes

Abducts

Question 17

What is piriformis syndrome?

Answer 17

“Fat wallet syndrome” piriformis compresses and irritates sciatic

Question 18

Where does the gluteus maximus insert?

Answer 18

Inserts into the iliotibial band (which inserts on proximal tibia)

Question 19

What movements does the gluteus maximus allow for?

Answer 19

Laterally rotates thigh

Abducts the thigh

Question 20

The gluteus maximus is a powerful thigh flexor or extensor?

Answer 20

Extensor

Question 21

What forms the lean muscle of the butt?

Answer 21

Gluteus maximus

Question 22

What muscle provides most of the lift when climbing stairs?

Answer 22

Gluteus maximus

Question 23

What does the gluteus medius do?

Answer 23

Abducts the thigh
Medially rotates thigh
Steadies Pelvis

Question 24

What does the gluteus minimus do?

Answer 24

Abducts the thigh
Medially rotates thigh
Steadies Pelvis

Question 25

The gluteus minimus is ______ to the gluteus medius.

Answer 25

Deep

Question 26

Where is the tensor fascia latae?

Answer 26

Goes from anterior, superior iliac spine ( and a little of ant. sup. crest) to iliotibial band

Question 27

What movements does the tensor fascia latae do?

Answer 27

Flex and abduct thigh

Question 28

How does the tensor fascia latae steady the knee?

Answer 28

By tightening the iliotibial band