Venous Drainage
1. From the right subclavian vein, and right internal jugular which are present in right arm and right side of head and neck. and both of them joint to form right brachiocephalic vein.
On the other hand left subclavian vein and left internal jugular vein which are present in left arm and left side of head and neck. These both joint to form left brachiocephalic vein.
2. Right brachiocephalic vein and left brachiocephalic vein will connect to superior venacava and carry deoxygenated blood to superior venacava.
3. Azygos vein which are present in the thoracic organ will carry deoxygenated blood to superior venacava.
On the other hand, Hemiazygos vein which are also present in the thoracic organs and are connected to left brachiocephalic vein which carry deoxygenated blood to superior venacava.
4. Right common iliac vein and left common iliac carries the deoxygenated blood to inferior venacava from the lower limbs and lower part of body (pelvic and legs).
5. From the alimentary canal which includes splenic vein, inferior mesenteric vein and superior mesenteric vein and gastric vein, from these parts deoxygenated blood goes to hepatic portal vein or portal vein and hepatic portal vein deoxygenated blood goes to liver and further goes to inferior venacava through hepatic portal vein.
Venous Drainage of the Body
1. Venous Drainage from the head and neck
2. Venous Drainage from the upper limb
3. Drainage from shoulder to heart
4. Drainage of the Thorax
5. Venous Drainage from the abdomen
6. Venous Drainage of lower limb and pelvic organs
Venous Drainage System
Major veins return deoxygenated blood from the body to right atrium.
Right atrium
Coronary sinus
(largest vein of heart)
Small
Middle
Great
Cardia vein
Right
Left
Marginal vein
Oblique vein of left atrium
Posterior vein of left ventricle
Anterior cardiac vein
Superior venacava
Right Brachiocephalic vein
Left Brachiocephalic vein
(head, neck, thorax, and upper limb)
Inferior venacava
Right common iliac vein
Left common iliac vein
(Abdomen, pelvis and lower limb)
Venous Drainage from the Head and Neck
External jugular vein External jugular vein
Right subclavian vein Left subclavian vein
Internal jugular vein Internal jugular vein
Right vertebral vein Left vertebral vein
Right Brachiocephalic vein - Superior venacava- Left Brachiocephalic vein
Venous Drainage from the Upper Limb
Radial vein join Ulnar vein - form brachial vein join
with Basilic vein to form axillary veins continue
as Subclavian veins - Brachiocephalic vein- Superior venacava
Drainage from Shoulder to Heart
External jugular, vertebral External jugular, vertebral
Right subclavian veins Right subclavian veins
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Internal jugular vein. Internal jugular vein
Right Brachiocephalic vein Left Brachiocephalic vein
Superior Venacava
Drainage of the Thorax
Superior venacava receives drainage from thoracic and abdominal walls by way of Azygos system.
(On the right side) Azygos vein- R.Brachiocephalic vein- Superior venacava -On the left side, left brachiocephalic (Present in Thorax) vein
Hemiazygos vein (present in thorax)
Accessary Hemiazygos vein
Venous Drainage from the Abdomen
Blood draining from abdominopelvic viscera and abdominal wall is returned to heart by inferior venacava.
Inferior venacava
Venous Drainage of the lower limb and pelvic organs
Right common iliac vein. Inferior Venacava (IVC) Left common iliac vein
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