Lateral thoracic artery

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The lateral thoracic artery (external mammary artery) is a branch of the axillary artery.

Lateral thoracic artery

System: Arterial
Function:
Origin: Axillary artery
Branches:
Insertion:
Arterial supply: Serratus anterior, pectoralis minor, pectoralis major, axillary lymph nodes, subscapularis
Venous drainage:
Lymphatic drainage:
Innervation:
Vertebral levels:
Search for Lateral thoracic artery in Gray's.


Contents

Anatomical Course

Arises from the axillary artery to follow the lateral border of pectoralis major to the thoracic wall.

Anastamoses

Arterial Supply to

Variations

Much larger in females, with lateral mammary branches which curve around the border of pectoralis major to supply the breast.

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