M11: Bonus Questions - Lower Extremity Muscles & Actions Flashcards
What are the muscles that make up the quadriceps?
rectus femoris
vastus lateralis
vastus medialis
vastus intermedius
What are the three major hip adductors (for this class)?
adductor magnus
adductor longus
adductor brevis
What are the two muscles discussed in this class that do plantar flexion?
gastrocnemius and soleus
What are the muscles that make up the “hamstrings”?
biceps femoris
semimembranousus
semitendinosus
Which muscles are involved in hip abduction?
(among the muscles on our class list)
gluteus medius and tensor fascia lata
Recall:
Gluteus medius does hip abduction and internal/medial rotation
Tensor fascia lata does hip abduction, hip flexion, and helps stabilize the knee)
What are the main muscles responsible for both hip extension and knee flexion?
(among the muscles on our class list)
biceps femoris
semimembranousus
semitendinosus
Which muscle performs hip extension, but not knee flexion?
(among the muscles on our class list)
gluteus maximus
Which muscles performs hip flexion only?
(among the muscles on our class list)
iliopsoas
Which main muscle performs dorsiflexion of the ankle?
tibilias anterior
Which muscles perform knee extension only?
(among the muscles on our class list)
vastus lateralis, vastus medialis, and vastus intermedius
Note: the rectus femoris does knee extension but also does hip flexion
Which muscles are involved in knee flexion?
(among the muscles on our class list)
Answer
- the “hamstrings” (biceps femoris, semimembranousus, semitendinosus)
- sartorius
Recall:
The “hamstrings” do knee flexion and hip extension
The sartorius does knee flexion, hip flexion, and external/lateral hip rotation
Which muscle performs ankle eversion?
(among the muscles on our class list)
peroneals
Which muscle performs inversion of foot/ankle?
(among the muscles on our class list)
tibialis anterior
Recall: the tibialis anterior does dorsiflexion of ankle, inversion of foot, and provides arch support
Which muscle performs hip external/lateral rotation, but not hip extension?
(among the muscles on our class list)
Which muscle performs hip external/lateral rotation, but not hip extension?
piriformis (external/lateral rotation of hip)
also sartorius (knee flexion, hip flexion, external/lateral rotation of hip)