380
UNIT 2
Covering, Support, and Movement of the Body
10
MUSCLE GALLERY
Table 10.17
Summary: Actions of Muscles Acting on the Thigh, Leg, and Foot
(Figure 10.26)
PART I: Muscles Acting
on the Thigh and Leg
(PM = Prime Mover)
 
Actions at the Hip Joint
Actions at the Knee
Flexion
Extension
Abduction
Adduction
Medial
Rotation
Lateral
Rotation
Flexion
Extension
Anterior and Medial Muscles
 
 
 
 
 
 
 
 
Iliopsoas
3
(PM)
 
 
 
 
 
 
 
Sartorius
3
 
3
 
 
3
3
 
Tensor fasciae latae
3
 
3
 
3
 
 
 
Rectus femoris
3
 
 
 
 
 
 
3
(PM)
Vastus muscles
 
 
 
 
 
 
 
3
(PM)
Adductor magnus
3
3
 
3
3
 
 
 
Adductor longus
3
 
 
3
3
 
 
 
Adductor brevis
3
 
 
3
3
 
 
 
Pectineus
3
 
 
3
3
 
 
 
Gracilis
 
 
 
3
3
 
3
 
Posterior Muscles
 
 
 
 
 
 
 
 
Gluteus maximus
 
3
(PM)
3
 
 
3
 
 
Gluteus medius
 
 
3
(PM)
 
3
 
 
 
Gluteus minimus
 
 
3
 
3
 
 
 
Piriformis
 
 
3
 
 
3
 
 
Obturator internus
 
 
3
(flexed)
 
3
(thigh)
 
 
3
 
 
Obturator externus
 
 
 
3
 
 
Gemelli
 
 
 
 
 
3
 
 
Quadratus femoris
 
 
 
 
 
3
 
 
Biceps femoris
 
3
(PM)
 
 
 
 
3
(PM)
 
Semitendinosus
 
3
 
 
 
 
3
(PM)
 
Semimembranosus
 
3
 
 
 
 
3
(PM)
 
Gastrocnemius
 
 
 
 
 
 
3
 
Plantaris
 
 
 
 
 
 
3
 
Popliteus
 
 
 
 
 
 
3
(and rotates
leg medially)
 
PART II: Muscles Acting
on the Ankle and Toes
 
Actions at the Ankle Joint
Actions at the Toes
Plantar Flexion
Dorsiflexion
Inversion
Eversion
Flexion
Extension
Anterior Compartment
 
 
 
 
 
 
Tibialis anterior
 
3
(PM)
3
 
 
 
Extensor digitorum longus
 
3
 
 
 
3
(PM)
Fibularis tertius
 
3
 
3
 
 
Extensor hallucis longus
 
3
3
(weak)
 
 
3
(great toe)
Lateral Compartment
 
 
 
 
 
 
Fibularis longus and brevis
3
 
 
3
 
 
Posterior Compartment
 
 
 
 
 
 
Gastrocnemius
3
(PM)
 
 
 
 
 
Soleus
3
(PM)
 
 
 
 
 
Plantaris
3
 
 
 
 
 
Flexor digitorum longus
3
 
3
 
3
(PM)
 
Flexor hallucis longus
3
 
3
 
3
(great toe)
 
Tibialis posterior
3
 
3
(PM)
 
 
 
previous page 414 Human Anatomy and Physiology (9th ed ) 2012 read online next page 416 Human Anatomy and Physiology (9th ed ) 2012 read online Home Toggle text on/off