Table of Contents
- 1 Where does bronchial vein drain?
- 2 Where do the bronchial arteries flow to?
- 3 Where does the left superior intercostal vein drain into?
- 4 Where does the right bronchial artery branch from?
- 5 Where do pulmonary veins carry blood to?
- 6 What drains the first intercostal space?
- 7 Do bronchial veins carry deoxygenated blood?
- 8 How do pulmonary veins carry oxygenated blood?
Where does bronchial vein drain?
The bronchial veins are small vessels that return blood from the larger bronchi and structures at the roots of the lungs. The right side drains into the azygos vein, while the left side drains into the left superior intercostal vein or the accessory hemiazygos vein.
Where do the bronchial arteries flow to?
The bronchial arteries carry oxygenated blood to the lungs at a pressure six times that of the pulmonary arteries. The bronchial arteries provide nourishment to the supporting structures of the lungs, including the pulmonary arteries, but generally do not participate in gas exchange (1,2).
What is the venous drainage of the lungs?
The pulmonary veins drain the lungs of the blood supplied by the pulmonary artery, and the bronchial veins drain the blood from the areas supplied by the bronchial artery. Whereas the pulmonary veins contain oxygenated blood the bronchial veins contain deoxygenated blood.
Where does the left superior intercostal vein drain into?
left brachiocephalic vein
The left superior intercostal vein forms by the union of the 2nd to 4th left posterior intercostal veins. It courses superiorly to the left of the midline, arches posteriorly lateral to the aortic arch to drain into the left brachiocephalic vein.
Where does the right bronchial artery branch from?
There is usually one bronchial artery on the right, which arises from the third posterior intercostal artery or from the upper left bronchial artery. The left bronchial arteries usually number two and arise from the descending thoracic aorta inferior to the origin of the third posterior intercostal artery.
How many bronchial veins are there in each lung?
The pulmonary veins also contain peripheral drainage from the deoxygenated blood bronchial veins. [3] There are four pulmonary veins. Pairs of two emerge from each of the hila of the lungs. The left superior pulmonary vein drains the left upper lobe and the lingula.
Where do pulmonary veins carry blood to?
Pulmonary veins: The veins do the opposite job of pulmonary arteries and collects the oxygenated blood and carry it from the lungs back to the heart. The veins merge into larger veins. Each lung has two pulmonary veins that deliver blood to the heart’s top left chamber or atrium.
What drains the first intercostal space?
The intercostal veins are a group of veins which drain the area between the ribs (“costae”), called the intercostal space….
| Intercostal veins | |
|---|---|
| Intercostal spaces, viewed from the left. | |
| Details | |
| Drains from | intercostal muscle, intercostal space |
| Artery | intercostal arteries |
What drains into superior vena cava?
The superior vena cava (SVC) starts at the confluence of the brachiocephalic veins behind the first right costal cartilage, and ends at the level of the third right costal cartilage where it drains into the right atrium. The first intercostal vein drains into the brachiocephalic veins on both sides.
Do bronchial veins carry deoxygenated blood?
This blood therefore forms a shunt (see below). In other words, the blood arises from the aorta, but instead of draining into the right-hand side of the circulation, the partly deoxygenated blood of the deep bronchial veins drains into the oxygenated blood that has passed through the alveolar capillaries.
How do pulmonary veins carry oxygenated blood?
An easy mnemonic is “A for ‘artery’ and ‘away’ (from the heart).” (The exceptions to this general rule are the pulmonary vessels. The pulmonary veins transport oxygenated blood back to the heart from the lungs, while the pulmonary arteries move deoxygenated blood from the heart to the lungs.)