Ch 10 and 11 part 6

1. © 2015 Pearson Education, Inc.
Muscles That Move the Foot and Toes

2. © 2015 Pearson Education, Inc.
A&P Flix: Extensor Digitorum Longus

3. © 2015 Pearson Education, Inc.
A&P Flix: Tibialis Anterior

4. © 2015 Pearson Education, Inc.
A&P Flix: Soleus

5. © 2015 Pearson Education, Inc.
Muscles of the Pelvic Girdle and Lower Limbs
• Action Line of Muscles
• When a muscle contracts, it develops tension
• The direction the muscle moves upon developing
tension is known as the action line
• The following figures show the action line of muscles
that move the thigh

6. © 2015 Pearson Education, Inc.
Figure 11.2 Factors Affecting Appendicular Muscle Function (7 of 7)
Action Lines at the Hip Joint
The hip joint, like the shoulder joint, is a multiaxial synovial joint that permits flexion/extension,
adduction/abduction, and medial/lateral rotation. Determining the action of a muscle on the hip
is identical to the process utilized for the shoulder, in that the action of a muscle on the hip is
determined by the structure of the joint and the location of the insertion of the muscle on the
femur (not shown) relative to the permitted axes of motion at the joint.
Adductor
magnus
Iliopsoas: flexion
Gluteus medius and
minimus: abduction
Obturator externus:
lateral rotation
Tensor fasciae latae:
medial rotation
Adductor longus:
adduction
Hamstring group:
extension and
lateral rotation
Action lines of the adductor magnus
Gluteal Group
ExtensionExtension and
abduction
Flexion,
abduction, and
medial rotation
Lateral Rotator GroupAdductor Group
Extension and
lateral rotationAdduction
ANTERIOR POSTERIOR
Gluteus
maximus
Gluteus medius
Gluteus minimus
Tensor
fasciae
latae
Acetabulum
Hamstring
group
Adductor
longus
Adductor magnus

7. © 2015 Pearson Education, Inc.
Compartments and Sectional Anatomy of the
Thigh and Leg
• Musculoskeletal Compartments of the Thigh and Leg
• Lateral compartment
• Fibularis longus
• Fibularis brevis

8. © 2015 Pearson Education, Inc.
Figure 11.28c Musculoskeletal Compartments of the Lower Limb
Tibialis anterior
Anterior tibial
artery and vein
Fibularis longus
Tibialis posterior
Posterior tibial artery
and vein
Soleus
Gastrocnemius
Deep Posterior Compartment
Superficial Posterior Compartment
Anterior Compartment
Lateral Compartment
c Horizontal section through
proximal right leg

9. © 2015 Pearson Education, Inc.
Compartments and Sectional Anatomy of the
Thigh and Leg
• Musculoskeletal Compartments of the Thigh and Leg
• Superficial posterior compartment
• Gastrocnemius
• Soleus
• Plantaris

10. © 2015 Pearson Education, Inc.
Figure 11.28c Musculoskeletal Compartments of the Lower Limb
Tibialis anterior
Anterior tibial
artery and vein
Fibularis longus
Tibialis posterior
Posterior tibial artery
and vein
Soleus
Gastrocnemius
Deep Posterior Compartment
Superficial Posterior Compartment
Anterior Compartment
Lateral Compartment
c Horizontal section through
proximal right leg

11. © 2015 Pearson Education, Inc.
Compartments and Sectional Anatomy of the
Thigh and Leg
• Musculoskeletal Compartments of the Thigh and Leg
• Anterior compartment
• Iliopsoas
• Quadriceps femoris
• Sartorius
• Extensor digitorum longus
• Extensor hallucis longus
• Fibularis tertius
• Tibialis anterior

12. © 2015 Pearson Education, Inc.
Figure 11.28a Musculoskeletal Compartments of the Lower Limb
Anterior Compartment
Rectus femoris
Vastus lateralis
Sartorius
Vastus medialis
Femoral artery, vein, and nerve
Adductor longus
Adductor magnus
Sciatic nerve
Biceps femoris and
semitendinosis
Gluteus maximus
Medial Compartment
Posterior Compartment
Horizontal section through proximal right thigha

13. © 2015 Pearson Education, Inc.
Figure 11.28b Musculoskeletal Compartments of the Lower Limb
Anterior Compartment Medial Compartment
Posterior Compartment
Rectus femoris
Femoral artery,
vein, and
nerve
Vastus lateralis
Adductor longus
Adductor magnus
Sciatic nerve
Biceps femoris
Horizontal section through distal right thighb

14. © 2015 Pearson Education, Inc.
Figure 11.28c Musculoskeletal Compartments of the Lower Limb
Tibialis anterior
Anterior tibial
artery and vein
Fibularis longus
Tibialis posterior
Posterior tibial artery
and vein
Soleus
Gastrocnemius
Deep Posterior Compartment
Superficial Posterior Compartment
Anterior Compartment
Lateral Compartment
c Horizontal section through
proximal right leg

15. © 2015 Pearson Education, Inc.
Figure 11.28d Musculoskeletal Compartments of the Lower Limb
Anterior Compartment Deep Posterior Compartment
Superficial Posterior CompartmentLateral Compartment
Tendon of tibialis
anterior
Anterior tibial artery
and vein
Tendon of fibularis
longus
Flexor hallucis longus
Posterior tibial artery
and vein
Soleus
Calcaneal tendon
Horizontal section
through distal right leg
d

16. © 2015 Pearson Education, Inc.
Compartments and Sectional Anatomy of the
Thigh and Leg
• Musculoskeletal Compartments of the Thigh and Leg
• Medial compartment
• Adductor longus
• Adductor brevis
• Pectineus
• Adductor magnus
• Gracilis
• Obturator externus

17. © 2015 Pearson Education, Inc.
Figure 11.28a Musculoskeletal Compartments of the Lower Limb
Anterior Compartment
Rectus femoris
Vastus lateralis
Sartorius
Vastus medialis
Femoral artery, vein, and nerve
Adductor longus
Adductor magnus
Sciatic nerve
Biceps femoris and
semitendinosis
Gluteus maximus
Medial Compartment
Posterior Compartment
Horizontal section through proximal right thigha

18. © 2015 Pearson Education, Inc.
Compartments and Sectional Anatomy of the
Thigh and Leg
• Musculoskeletal Compartments of the Thigh and Leg
• Deep posterior compartment
• Popliteus
• Flexor hallucis longus
• Flexor digitorum longus
• Tibialis posterior