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Human Anatomy

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Human Anatomy The Muscle System III G. Abdominal Muscles 1. Rectus Abdominis (ant.) Lateral Abdominal Muscles Three layers External oblique Internal oblique ... – PowerPoint PPT presentation

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Title: Human Anatomy


1
Human Anatomy
  • The Muscle System III

2
G. Abdominal Muscles
Anterior 1 Lateral - 3
3
1. Rectus Abdominis (ant.)
4
Lateral Abdominal Muscles
  • Three layers
  • External oblique
  • Internal oblique
  • Transverse abdominis
  • All increase intra-abdominal pressure
  • Lifting heavy weight
  • Valsalva movement

5
2. External oblique
Hands in the pocket
Most superficial of the 3
6
3. Internal oblique
Right angle to external oblique
Middle layer
7
4. Transverse abdominis
Deepest of the 3 layers horizontal
8
H. Hip Muscles (ant. view)
Anterior view
9
H. Hip Muscles (post. view)
Posterior view
10
1. Psoas major 2. Iliacus
Flexors of hip joint
11
3. Gluteus maximus
Extensor of hip joint
Extensor agonist of hip joint
12
3. Gluteus maximus
13
I. Anterior Thigh
Five muscles
14
1. Sartorius
15
1. Sartorius
16
Quadriceps
  • Consist of 4 synergistic muscles
  • Share a tendon that attaches to tibial tuberosity
  • Contraction results in extension of knee joint

17
Quadriceps (4)
All 4 attach to the tibial tuberosity
All 4 extend the knee joint
18
2. Rectus femoris
Quadriceps tendon
Extension of knee joint
19
3. Vastus lateralis
20
4. Vastus medialis
21
5. Vastus intermedius
Deep to the rectus femoris
22
J. Medial Thigh
  • Gracilis
  • Adductor
  • group

All produce adduction of hip ( knee)
23
K. Lateral Thigh (post.)
Tensor fasciae latae
Iliotibial tract IT tract
24
L. Posterior Thigh
2 attach medial 1 attaches lateral
3 muscles hamstrings
MEDIAL
LATERAL
25
L. Posterior Thigh
All 3 attached to ischial tuberosity
All 3 cause flexion of knee
26
1. Semitendinosus
Superficial medial
27
2. Semimembranosus
Deep medial
28
3. Biceps femoris
Lateral
29
M. Posterior Leg
superficial
deep
30
1. Gastrocnemius
2 heads
Calcaneous tendon
31
2. Soleus
Calcaneous tendon
Shares tendon w/ gastrocnemius
32
Anterior Leg
  • Tibialis
  • anterior
  • Extensor
  • digitorum

33
1. Tibialis Anterior
34
1. Tibialis Anterior
35
2. Extensor digitorum
36
2. Extensor digitorum
37
O. Lateral Leg
1. Peroneus longus
38
1. Peroneus longus
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