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Anatomy of the Brachial Plexus
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The summary of class notes + textbook for the human anatomy. In-depth description of the bones, muscles, fascias, and organs of the body with related clinical cases
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Brachial Plexus and AxillaryArtery
Background Knowledge
The artery + nerve are usually in locations where they are best protected
⇒ In the flexion surface + hollow space created by bones and muscles (canal +
fossa)
Nerve + vessels will also go the shortest way and supply the closest
structures
Arterial circulation of structure which function
frequently will need to form collateral
circulation ⇒ Anastomosis
Axilla:
Wall
An irregularly shaped pyramidal
areas of transition from neck ⇒
upper limb
Components:
Apex (inlet) : connect the neck and
the axilla
Base (floor): Skin (axillary fossa)
Anterior Wall: Pectoralis major and
minor
Brachial Plexus and Axillary Artery 1
, Posterior Wall: Posterior axillary
fold
Lateral Wall: Humerus
Medial Wall: Thoracis cage and
serratus anterior muscle
Content of the Axilla
Cords and branches of brachiall
plexus
Axillary artery + its branches
Axillary vein and its tributaries
Axillary lymph nodes
Axillary lymphatic vessels
Axillary fat
Loose CT
Axillary Artery
Origin: from the subclavian artery
(SA) at the lateral of first rib
Termination: Below the inferior
border of teres major/pectoralis
major
Brachial Plexus and Axillary Artery 2
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