1. Muscles #2

2. Muscles of the Abdominal Wall

3. Muscles of the Abdominal Wall
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Rectus abdominis
External oblique
Internal oblique
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Transversus abdominis
Peritoneum
Transversus
abdominis
Linea alba
Internal oblique
External oblique
(a)
Skin
(e)
Rectus abdominis
External oblique
Internal oblique
Transversus abdominis
(b)
(c)
(d)

4. Muscles That Move the Thigh

5. Muscles That Move the Thigh
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Psoas major
Psoas minor
Iliacus
Tensor fasciae
latae
Pectineus
Sartorius
Adductor longus
Sartorius
Rectus femoris
Adductor magnus
Vastus intermedius
Vastus lateralis
Gracilis
Quadriceps femoris
tendon (patellar tendon)
Vastus medialis
Patella
Patellar
ligament
(a)
(b)
Adductor brevis
Gracilis
Adductor longus
Adductor magnus
(c)
(d)
(e)
Psoas major
Psoas minor
Iliacus
(f)
(g)

6. Muscles That Move the Thigh
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Gluteus medius
Tensor fasciae latae
Gluteus maximus
Sartorius
Rectus femoris
Vastus lateralis
Biceps femoris
Iliotibial tract (band)
(a)
Gluteus medius
Gluteus minimus
Gluteus maximus
Piriformis
(b)
(c)
(d)

7. Muscles That Move the Leg

8. Muscles That Move the Leg
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Gluteus medius
Gluteus maximus
Adductor magnus
Vastus lateralis
covered by fascia
Gracilis
Semitendinosus
Biceps femoris
Semimembranosus
Sartorius
Gastrocnemius
Semitendinosus
(a)
Biceps femoris
(long head)
Semimembranosus
Biceps femoris
(short head)
(b)
(c)

9. Muscles That Move the Leg
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Lateral
Medial
Semitendinosus m.
Long head of
biceps femoris m.
Semimembranosus m.
Short head of
biceps femoris m.
Gracilis m.
Adductor magnus m.
Sciatic n.
Plane of
section
Adductor longus m.
Great saphenousv.
Shaft of femur
Femoralv . and a.
Sartorius m.
Vastus lateralis m.
Vastus medialis m.
Vastus intermedius m.
Adipose tissue
Rectus femoris m.
Skin
Anterior

10. Muscles That Move the Leg
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Plantaris
Iliotibial tract
(band)
Soleus
Semitendinosus
Biceps femoris
Semimembranosus
Gastrocnemius
Gracilis
Sartorius
Gastrocnemius:
Medial head
Lateral head
Fibularis
longus
(b)
(c)
Soleus
Calcaneal tendon
Fibularis
brevis
Flexor digitorum
longus
Tibialis posterior
Flexor retinaculum
Flexor digitorum
longus
Calcaneus
Fibular
retinacula
(a)
(d)
(e)

11. Muscles That Move the Foot

12. Muscles That Move the Foot
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Patella
Patellar ligament
Tibialis anterior
Gastrocnemius
Fibularis longus
Extensor digitorum
longus
Soleus
Fibularis brevis
Tibia
Extensor retinacula
(a)
Tibialis anterior
Extensor digitorum
longus
Fibularis tertius
Extensor
hallucis
longus
(b)
(c)
(d)

13. Muscles That Move the Foot
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Biceps femoris
Vastus lateralis
Head of fibula
Gastrocnemius
Tibialis anterior
Fibularis longus
Soleus
Extensor digitorum
longus
Calcaneal tendon
Fibularis brevis
Extensor retinacula
Fibularis tertius
Fibular
retinacula
(a)
Fibularis longus
Fibularis brevis
(b)
(c)

14. 9.9: Lifespan Changes Myoglobin, ATP, and creatine phosphate decline
By age 80, half of muscle mass has atrophied
Adipose cells and connective tissues replace muscle tissue
Exercise helps to maintain muscle mass and function