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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 subclavian vein is a paired large vein, one on either side of the body, that is responsible for draining blood from the upper extremities, allowing this blood to return to the heart. The left subclavian vein plays a key role in the absorption of lipids , by allowing products that have been carried by lymph in the thoracic duct to enter the ...
The tunica media may (especially in arteries) be rich in vascular smooth muscle, which controls the caliber of the vessel. Veins do not have the external elastic lamina, but only an internal one. The tunica media is thicker in the arteries rather than the veins. The outer layer is the tunica adventitia and the thickest layer in veins. It is ...
The left and right external jugular veins drain into the subclavian veins. The internal jugular veins join with the subclavian veins more medially to form the brachiocephalic veins. Finally, the left and right brachiocephalic veins join to form the superior vena cava, which delivers deoxygenated blood to the right atrium of the heart. [2]
Brachial artery and brachial veins; Anterior tibial artery and anterior tibial veins; Posterior tibial artery and posterior tibial veins; Fibular artery and fibular veins; Examples of arteries that do not have venae comitantes (i.e. those that have "regular" veins): Axillary artery and the axillary vein; Subclavian artery and the subclavian vein
The deltoid branch of the thoracoacromial artery also passes through this triangle, giving branches to both the deltoid and pectoralis major muscles. The subclavian vein and the subclavian artery may be accessed via this triangle, as they are deep to it.
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.
This close proximity of the artery to the veins helps in venous return due to the pulsations in the artery. [12] It also allows for the promotion of heat transfer from the larger arteries to the veins in a counterflow exchange that helps to preserve normal body heat. [11] Venules Deep and superficial veins of the arm and near thorax