1. Chapter 10
The Muscular System
Part I

2. Muscles of the Lateral Compartment
These muscles plantar flex and evert the foot
They include the fibularis longus and fibularis brevis muscles
Figure 10.22a

3. Muscles of the Lateral Compartment
Figure 10.22b,c

4. Muscles of the Posterior Compartment
These muscles primarily flex the foot and the toes
They include the gastrocnemius, soleus, tibialis posterior, flexor digitorum longus, and flexor hallucis longus
Figure 10.23a

5. Muscles of the Posterior Compartment
Figure 10.23b, c

6. Muscles of the Posterior Compartment
Figure 10.23d-f

7. Muscle Actions of the Thigh: Summary
These muscles:
Flex and extend the thigh (posterior compartment)
Extend the leg (anterior compartment)
Adduct the thigh (medial compartment)

8. Muscle Actions of the Thigh: Summary
Figure 10.24a

9. Muscle Actions of the Leg: Summary
These muscles:
Plantar flex and evert the foot (lateral compartment)
Plantar flex the foot and flex the toes (posterior compartment)
Dorsiflex the foot and extend the toes (anterior compartment)

10. Muscle Actions of the Leg: Summary
Figure 10.24b