Muscles of the Thigh Flashcards
What is the inguinal ligament?
Ligament between anterior superior iliac spine and pubis
What is the fascia lata?
Fibrous sheath that encircles all the muscles of the thigh, tightly binding them
What is the iliotibial band?
Thickened lateral portion of the fascia lata, from the iliac crest to lateral proximal tibia
What two muscles compose the iliopsoas?
Iliacus
Psoas major
Where does the iliopsoas run?
Fibers from 2 different areas pass under the inguinal ligament an insert together, via a common tendon, on the lesser trochanter(femur)
What movements does the iliopsoas allow for?
Allows for hip flexion, trunk flexion
Where is the iliacus?
Starts in the iliac fossa; inserts w/ psoas major on lesser trochanter
What shape is the iliacus?
Fan-Shaped
Does the iliacus allows for flexion or extension?
Hip flexion (because it passes over the hip joint)
Where is the psoas major?
From transverse processes of lumbar vertebrae; inserts w/ iliacus on lesser trochanter
Which muscle in the iliopsoas is medial?
Psoas major
What movements does the Psoas major allow for?
Allows for hip flexion, and trunk flexion (trunk because of L vertebrae insertion)
Allows for lateral flexion if just one side contracts
Where is the piriformis?
Sacrum to greater trochanter
What direction are the fibers of the piriformis?
Transverse
The piriformis ________ rotates extended thigh
Laterally
