Muscles of the leg and abdomen

1
Muscles of the leg and abdomen
2

• 1.Gluteus maximus Action extends and rotates
  thigh laterally
• 2. Iliotibial tract connective tissue
• Gluteus medius Abduct and rotate the thigh
  medially
• Gluteus minimus Abduct and rotate the thigh
  medially
• Piriformis Action abducts and rotates the thigh
  laterally
• Adductor brevis Action adduct, flex and rotate
  the thigh laterally
• Adductor longus Action adduct, flex and rotate
  the thigh laterally
• Adductor magnus Action adduct, flex and rotate
  the thigh laterally

3
Hamstring muscles 1. semimembranosis 2
semitendinosus 3. biceps femoris action
flex the leg Quadriceps femoris 8. vastus
lateralis 9. rectus femoris 10. vastus
medialis 11. vastus intermedius (hidden by
others) action extends lower leg Other muscles
of the leg 4. sartorius action flexes lower
leg and thigh, rotates leg medially
4
Other muscles of the leg continued 5.
gracilis action adducts thigh , flexes
leg 6. iliotibial tract (connective tissue) 7.
tensor fasciae latae action flexes and
abducts thigh
5

• Gastrocnemius
• Action flexes leg, extends foot
• Soleus (just under gastrocnemius)
• Action extends foot
• Achilles tend (not muscle)
• Tibialis Anterior
• Action dorsiflex and inversion of foot
• Tibialis posterior
• Action extends and inverts foot

6
Abdomen

• 1. rectus abdominis
• 2. Transverse abdominis
• 3. internal oblique
• 4. external oblique
• Action compress the internal organs, aid in
  excretion, breathing, and birthing. Flex the
  trunk
• 5, 4, 6 are connective tissue and not required.