| The Axilla |
|
| Location and importance |
 |
 Pyramid-shaped
space between the upper part of the arm, and the side of the upper chest.
Provides
passage for nerves, blood and lymph vessels from the root of the neck
to the upper limb. |
| |
Note
the boundaries:
- Anterior axillary fold [D]
- Posterior axillary fold [B]
- Base formed by skin [C]
- Lateral border [A] formed by humerus.
|
| |
|
| Boundaries |
|
Apex: |
- Anterior:
the lateral part of the clavicle.
- Posterior:
upper part of the scapula.
- Medially:
outer border of the first rib.
|
| |
| Walls: |
- Anterior:
pectoralis major, minor and subclavius
- Posterior:
subscapularis, latissimus dorsi and teres major
- Medial:
upper 5 ribs and intercostal muscles covered by serratus anterior.
- Lateral: biceps brachii
and coracobrachialis.
|
| |
| Base: |
- Anterior: lower border
of pectoralis major.
- Posterior: tendons of
latissimus dorsi and teres major muscle
- Medial: chest wall
- Floor: axillary
fascia and skin stretching between the anterior and posterior walls.
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| |
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