M11: Lower Extremity Muscles - Actions V1 Flashcards
What are the actions of the gluteus maximus?
Primary Action:
- Hip Extension
Other Actions
- External/Lateral Rotation
What are the actions of the the gluteus medius?
Primary action:
- hip abduction
Other actions
- internal/medial rotation of hip
What are the actions of the tensor fascia lata?
hip flexion and abduction
also stabilizes the knee
Image: TFL = tensor fascia lata
What are the actions of the sartorius?
knee flexion
hip flexion
external/lateral rotation of hip
What are the actions of the rectus femoris?
Knee extension / Hip flexion
What are the actions of the vastus lateralis?
knee extension
What are the actions of the vastus medialis?
knee extension
What are the actions of the vastus intermedius?
knee extension
Bonus note: the vastus intermedius is located deep to the rectus femoris
What are the actions of the biceps femoris?
hip extension / knee flexion
What are the actions of the semitendinosus?
hip extension / knee flexion
What are the actions of the semimembranousus?
hip extension / knee flexion
What are the actions of the adductor magnus?
adduction of hip
What are the actions of the adductor longus?
adduction of hip
What are the actions of the adductor brevis?
adduction of hip
What is the action of the piriformis?
external/lateral rotation of hip
What are the actions of the ilopsoas?
hip flexion
Bonus note: the iliopsoas consists of the iliacus and psoas major
What are the actions of the gastrocnemius?
plantar flexion
What are the actions of the soleus?
plantar flexion
What are the actions of the peroneals?
Eversion of foot
Note: the peroneals are a group of multiple muscles
