The internal thoracic venous system drains the ventro-cranial abdominal wall, the ventro-lateral thoracic wall, the diaphragm and part of the mediastinum, conveying the deoxygenated blood from these regions into the CrVC.
Which vein drains blood from the thoracic region?
The Thoracic Region Venous drainage of the thoracic cage is accomplished primarily by the intercostal veins. The intercostal venous blood generally courses in the opposite direction of the arterial supply and drains into the azygos system of veins (see Figs.
What two veins form the internal thoracic vein?
Anatomical Parts The internal thoracic veins arise from the superior epigastric vein, accompanie the internal thoracic artery along its course and terminates in the brachiocephalic vein.
Where does the internal thoracic artery end?
The internal thoracic artery terminates at the level of the sixth rib or the sixth intercostal space, dividing into two terminal branches: the musculophrenic and superior epigastric arteries. The musculophrenic artery runs in an inferolateral direction, terminating before reaching the last intercostal space.What are the tributaries of internal thoracic vein?
Superior vena cava tributaries are the azygos vein and small veins from the pericardium and other mediastinal structures.
Which vein drains the upper left side of the posterior thoracic wall?
Posterior intercostal veinsThe thoracic aorta, viewed from the left side. (Intercostals visible at right.)DetailsArteryPosterior intercostal arteriesIdentifiers
Where does blood from the thoracic wall drain?
The venous drainage of the thoracic wall drains deoxygenated venous blood from the periphery of the thoracic cage back into the systemic circulation.
Where is the intercostal vein?
The intercostal veins run above the intercostal arteries, which run above the intercostal nerves. The posterior intercostal veins drain into the azygos vein (right side), and hemiazygos and accessory hemiazygos veins (left side). The latter two veins ultimately drain into the azygos vein.Are there two internal thoracic veins?
Variations. Bifurcation of each internal thoracic vein is common. The left internal thoracic vein may bifurcate between ribs 3-4 or remain as a single vein. The right internal thoracic vein may bifurcate between ribs 2-4 or remain as a single vein.
Where is superior thoracic artery?The superior thoracic artery (highest thoracic artery) is a small artery located near the armpit in humans. It normally arises from the first division of the axillary artery, but may arise from the thoracoacromial artery, itself a branch of the second division of the axillary artery.
Article first time published onWhere does the left superior intercostal vein drain into?
The left superior intercostal vein drains the 2nd and 3rd posterior intercostal veins on the left side of the body. It usually drains into the left brachiocephalic vein. It may also communicate with the accessory hemiazygos vein.
Where does the internal thoracic artery come from?
To recap, the internal thoracic artery originates off of the subclavian artery giving off several branches as it descends along the inner surface of the anterior thorax: Anterior intercostal arteries at each intercostal space.
Where does the brachiocephalic vein drain into?
The left brachiocephalic vein crosses posterior to the manubrium to meet the right brachiocephalic vein to form the superior vena cava, which empties into the right atrium (Osborn et al., 1999; Lasjaunias et al., 2001).
What does the thoracic lymphatic duct drain into?
The thoracic duct continues superiorly to empty into the junction of the left subclavian and internal jugular veins. The right lymphatic duct drains the right side of the thorax, right upper extremity, and right side of the neck and head.
Which veins drain into azygos vein?
Azygos veinPrecursorRight supracardinal veinDrains fromsuperior intercostal veinDrains tosuperior vena cavaIdentifiers
Which vein runs across the chest?
The axillary vein is a major vein in the upper body that carries blood from the upper limb, armpit, and the upper side of the chest wall towards the heart.
What drains the thoracic intercostal muscles?
Intercostal veinsIntercostal spaces, viewed from the left.DetailsDrains fromintercostal muscle, intercostal spaceArteryintercostal arteries
Where is the thoracic vena cava?
This vein is unpaired. It runs along the right aspect of the thoracic vertebral column and enters into the thorax at the aortic hiatus of the diaphragm.
What does the subclavian vein drain?
The primary function of the subclavian vein is to drain deoxygenated blood from the upper region of the body—including the arms and the shoulder areas—and transport it back to the heart. 6 Another important function of the subclavian is to collect lymph fluid from the lymphatic system from the internal jugular vein.
What drains the anterior intercostal veins?
Anterior intercostal veinsDrains tointernal thoracic veinArteryanterior intercostal arteriesIdentifiersLatinvenae intercostales anteriores
What drains into superior vena cava?
Superior vena cavaSourcebrachiocephalic vein, azygos veinDrains toRight atriumIdentifiersLatinvena cava superior, vena maxima
What does the Hemiazygos vein drain?
The hemiazygos vein helps to drain the left mediastinum and left lower esophagus. The hemiazygos vein crosses from left to right at approximately the level of T9 and terminates by emptying into the azygos vein.
What does the highest thoracic artery supply?
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 is the axillary pulse?
Axillary arteryFMA22654Anatomical terminology
What is superior thorax?
The thoracic inlet, also known as the superior thoracic aperture, refers to the opening at the top of the thoracic cavity.
What drains blood from the head and neck?
jugular vein, any of several veins of the neck that drain blood from the brain, face, and neck, returning it to the heart via the superior vena cava. The main vessels are the external jugular vein and the interior jugular vein.
Where is the Lima take off located?
As described above, the best bypass to use when possible is known as the LIMA. This runs on the left inner chest wall.
Which arteries supply blood to the thoracic wall?
These arteries are the brachiocephalic trunk, left common carotid, and left subclavian arteries. As the aorta descends posterior to the heart in the left paravertebral gutter, the 3rd to 11th posterior intercostal arteries split off and supply the thoracic wall.
Why are internal mammary arteries used for grafts?
The internal mammary artery (IMA) grafts have been associated with long-term patency and improved survival as compared to saphenous vein grafts (SVGs). Early failure of IMA is attributed to poor surgical technique and less with thrombosis.
What vein empties directly into the internal jugular vein?
The lymphatic drainage of the right upper limb, right thorax and right side of the head and neck empties into the junction between the right subclavian vein and internal jugular vein, which merge to form the right brachiocephalic vein.
Which parts of body are drained by the SVC?
SourceBrachiocephalic vein, azygos veinDraining areaUpper half of the body (above the diaphragm)Drains toRight atrium of heart
