The Axillary Region
Original Editor - Alyssa Brooks-Wells
Top Contributors - Alyssa Brooks-Wells and Kim Jackson
Description:[edit | edit source]
The axillary region (also known as the arm pit) is a pyramid-shaped area located between the shoulder girdle and thorax. It serves as a space for neurovascular and lymphatic structures to travel through to reach the upper extremity from the neck[1].
Structure/Borders:[edit | edit source]
- Apex: (also known as cervicoaxillary margin, axillary inlet) region of entrance/exit of the axillary neurovascular bundle
- Base:
- Axillary skin
- Fascia Axillaris
- Anterior Wall:
- Pectoralis major
- Pectoralis minor
- Posterior Wall:
- Subscapularis
- Latissimus dorsi
- Teres major
- Medial Wall:
- Ribs 1-4
- Intercostal muscles of ribs 1-4
- Serratus anterior
- Lateral Wall:
The structure of the axilla is dependent upon the position of the upper extremity - an expansive region when the arm is elevated and minimized when adducted[2].
Contents:[edit | edit source]
- Axillary artery
- Axillary vein
- Brachial plexus
- Axillary lymph vessels and nodes
- Adipose tissue
- Mammary tissue possible
Function:[edit | edit source]
Clinical Relevance:[edit | edit source]
Related Pages:[edit | edit source]
Resources[edit | edit source]
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- numbered list
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References[edit | edit source]
- ↑ 1.0 1.1 TeachMeAnatomy. The Axilla Region. Available from: https://teachmeanatomy.info/upper-limb/areas/axilla/ (accessed 15 September 2020).
- ↑ 2.0 2.1 Macéa JR, Fregnani JHTG. Anatomy of the thoracic wall, axilla and breast. Int. J. Morphol. 2006;24(4):691-704.
- ↑ Lumley JS, Craven JL, Abrahams PH, Tunstall RG, editors. Bailey & Love's Essential Clinical Anatomy. CRC Press; 2018 Nov 5.
