Axial Muscles

1
Axial Muscles
2
A. Facial Muscles
3
Orbicularis oculi2. Orbicularis oris
4
3. Temporalis
Attaches to coronoid process of mandible
5
4. Masseter
Vertical fibers
6
5. Buccinator
Horizontal to masseter
7
Muscles of Mastication
8
Muscles of Mastication
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6. Zygomaticus
10
7. Depressor anguli oris
11
B. Cervical Muscles
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1. Sternocleidomastoid
13
1. Sternocleidomastoid
14
2. Splenius capitis
15
C. Muscles of Respiration

1. intercostals
2. diphragm

16
1. Intercostals
Note the angle of the muscles. They are opposite.
17
2. Diaphragm
18
Abdominal Wall (4 muscles)
One anterior musclerectus abdominis Three
lateral muscles
19
Lateral Abdominal Muscles (3)

• Superficial to deep
• External oblique
• Internal oblique
• Transverse abdominis

20
Lateral Abdominal Muscles (3)
21
Abdominal muscle function

• Compress and hold abdominal organs in place
• Increase intra-abdominal pressure while lifting
  heavy objects or during a valsalva movement