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The subclavian nerve may issue a branch called the accessory phrenic nerve [3] [2] which innervates the diaphragm. [3] The accessory phrenic nerve may rather branch from the C4 or C6 segments or ansa cervicalis. [4] This nerve usually joins with the phrenic nerve before innervating the diaphragm, ventral to the subclavian vein. [5]
The subclavian arteries are relatively superficial, and can be seen using ultrasound. [8] Aberrant right subclavian artery is a condition where the right subclavian artery arises on the arch of aorta distal to the left subclavian artery, instead of brachiocephalic trunk. This condition occurs in about 0.4 to 1.8% of the general population.
The internal thoracic artery arises from the anterior surface of the subclavian artery near its origin. [2] [3] It has a width of between 1-2 mm. [4] It travels downward on the inside of the rib cage, approximately 1 cm from the sides of the sternum, [3] and thus medial to the nipple. It is accompanied by the internal thoracic vein.
The subclavius is a small triangular muscle, placed between the clavicle and the first rib. [1] Along with the pectoralis major and pectoralis minor muscles, the subclavius muscle makes up the anterior axioappendicular muscles, also known as anterior wall of the axilla. [2]
The scalene muscles have an important relationship to other structures in the neck. The brachial plexus and subclavian artery pass between the anterior and middle scalenes. [4] The subclavian vein and phrenic nerve pass anteriorly to the anterior scalene as the muscle crosses over the first rib. The phrenic nerve is oriented vertically as it ...
the right arm (via the right subclavian trunk) [1] and right side of the head and neck (via the right jugular trunk) [1] also, in some individuals, the lower lobe of the left lung. [5] All other sections of the human body are drained by the thoracic duct. [2] [6]
[3] Superior mediastinum. The thoracic ducts ascends into the superior mediastinum, reaching 2-3cm superior to the clavicle, [3] as high up as the C7 vertebral level. [5] In the superior mediastinum, the thoracic duct is situated posterior to and to the left of the esophagus. It is situated between the visceral and alar fascia. [5]
An anterior or pectoral group consists of four or five glands along the lower border of the Pectoralis minor, in relation with the lateral thoracic artery.. Their afferents drain the skin and muscles of the anterior and lateral thoracic walls, and the central and lateral parts of the mamma; their efferents pass partly to the central and partly to the subclavicular groups of axillary glands.