Chapter 10
The Muscular System
381
10
Adductors
Vastus
lateralis
Hamstrings
Posterior compartment of thigh
(flexes leg and extends thigh);
innervated by tibial nerve (portion
of sciatic nerve)
Medial compartment of thigh
(adducts thigh); innervated by obturator nerve
Anterior compartment of thigh
(extends leg); innervated by femoral nerve
Vastus
intermedius
Rectus femoris
Femur
Vastus medialis
Posterior compartment of leg
(plantar flexes foot, flexes toes);
innervated by tibial nerve
Anterior compartment of leg
(dorsiflexes foot, extends toes);
innervated by deep fibular nerve
Lateral compartment of leg
(plantar flexes and everts foot);
innervated by superficial
fibular nerve
Triceps surae
Fibula
Tibialis
anterior
Tibia
Fibularis
muscles
(b) Muscles of the leg
(a)
(b)
(a) Muscles of the thigh
Posterior
compartment
muscles
Anterior
compartment
muscles
Medial
compartment
muscles of thigh
and lateral
compartment
muscles of leg
Key:
MUSCLE GALLERY
Table 10.17
(continued)
Figure 10.26
Summary: Actions of muscles of the thigh
and leg.
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