The main function of this artery is to provide blood supply for the pectoralis major, pectoralis minor, subclavius and serratus anterior muscles. Additionally, it supplies the muscles and adjacent skin of the first two intercostal spaces.
Where does the superior thoracic artery arise from?
The superior thoracic artery originates from the first part of the axillary artery, just inferior to subclavius. It courses posterior to the axillary vein.
What is the function of the thoracic artery?
Blood Supply and Lymphatics
The internal thoracic artery functions to supply the anterior chest wall, from the clavicle to the umbilicus. This area of supply also includes supply to the sternum and breasts.
Is the subclavian artery is superior to the thoracic artery?
The subclavian artery exits the thorax via the superior thoracic aperture between the anterior and middle scalene muscles before passing between the first rib and clavicle. At the lateral border of the first rib it continues as the axillary artery.
What passes through the superior thoracic aperture?
The right and left subclavian arteries and veins pass through the superior thoracic aperture. These vessels may be compromised by pathologic conditions of the lower cervical or upper thoracic viscera.
What does lateral thoracic artery supply?
The lateral thoracic artery supplies the axillary lymph nodes, serratus anterior, pectoralis major, pectoralis minor and subscapularis muscles. Additionally, it can provide blood supply to the breast in females. This article will discuss the anatomy and function of the lateral thoracic artery.
What is the supreme intercostal artery?
The supreme intercostal arteries, or superior intercostal arteries, are formed as a direct result of the embryological development of the intersegmental arteries. These arteries are paired structures of the upper thorax which normally form to provide blood flow to the first and second posterior intercostal arteries.
What does superior epigastric artery supply?
• Superior Epigastric Artery: Terminal branch of the internal mammary artery that supplies the upper central abdominal skin through the upper rectus muscle. • Thoracic and Lumbar Intercostal Arteries: Travel between the external and internal oblique muscles with direct lateral skin perforators.
What does the Thoracoacromial trunk supply?
The thoracoacromial artery supplies the pectoralis major and minor muscles, a part of the deltoid muscle and the skin overlying the clavipectoral fascia.
Where is the thoracic artery located?
The internal thoracic artery arises from the anterior surface of the subclavian artery near its origin. It has a width of between 1-2 mm. It travels downward on the inside of the rib cage, approximately 1 cm from the sides of the sternum, and thus medial to the nipple. It is accompanied by the internal thoracic vein.
Where is a thoracic aneurysm located?
“Thoracic” refers to the part of the aorta that runs through the chest (thoracic aortic aneurysm). Aneurysms occur more often in the portion of the aorta that runs through the abdomen (abdominal aortic aneurysm).
How many thoracic arteries are there?
Here are the two internal thoracic arteries. After passing behind the first rib, which is here, each one runs down the inside of the chest wall, just lateral to the sternum, in front of the transversus thoracis muscle. Its branches supply the anterior chest wall.
What are the 3 parts of subclavian artery?
During its course, the subclavian artery is divided into three parts which are described relative to the anterior scalene muscle. The main branches of the subclavian artery include the vertebral artery, the internal thoracic artery, the thyrocervical trunk, the costocervical trunk, and the dorsal scapular artery.
What is the major destination of the subclavian artery?
The left subclavian artery supplies blood to the left arm and the right subclavian artery supplies blood to the right arm, with some branches supplying the head and thorax.
What arteries come off the subclavian artery?
The main branches of the subclavian artery are the vertebral arteries, the thyrocervical trunk, the internal thoracic (mammary) artery and the costocervical trunk. The axillary artery runs from the lateral border of the first rib to the outer, inferior margin of the pectoralis major muscle.
Which part of the lung S extends through the superior thoracic inlet?
Mediastinum. The mediastinum is a thick midline partition that extends from the sternum anteriorly to the thoracic vertebrae posteriorly, and from the superior thoracic aperture to the inferior thoracic aperture.
What passes through the thoracic outlet?
The thoracic outlet refers to the confined space between the clavicle and first rib. Structures that pass through this region include the nerves of the brachial plexus, the subclavian artery, and the subclavian vein.
