BLOOD SUPPLY TO UPPER LIMB

CIRCULATORY SYSTEMBLOOD CIRCULATION TO UPPER LIMB : 

CIRCULATORY SYSTEMBLOOD CIRCULATION TO UPPER LIMB Presented by; M.K Lamba

BLOOD SUPPLY TO UPPER LIMB : 

BLOOD SUPPLY TO UPPER LIMB The arterial supply is mainly by; Subclavian artery Axillary artery Brachial artery Radial artery Ulnar artery Palmar arch Digital arteries

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Subclavian artery: It arise from bracheo- cephalic artery, pass behind clavicle bone over the first rib before entering the axilla where it continuous as axillary artery. Before entering axilla each subclavian gives off two branches; vertebral artery which supply to brain and internal thoracic artery which supply to breast and thoracic cavity.

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2. Axillary artery: is conti- nuation of subclavian artery and lies in axilla. The first part lies deeply than it runs more superficial and becomes brachial artery. 3. Brachial artery: is conti- nuation of axillary artery, it runs down internal aspect of upper arm, passes to front of the elbow and extends to 1 cm below joint, devides radial and ulnar arteries.

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4. Radial artery: passes down radial or lateral side of the forearm to the wrist. Just above the wrist it lies superficially and can be felt in front of the radius, as the radial pulse. The artery then passes between the first and second meta-carpal bones and enters the palm of hand. 5. Ulnar artery: run down wards on the ulnar or inner aspect of forearm to cross wrist and pass into hand.

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6. Palmar arch and Digital arteries: There are anastomoses between the radial and ulnar arteries, called as deep and superficial palmar arches, from which palmar metacarpal and digital arteries arise to supply the structures in the hand and fingers.

VENOUS RETURN FROM UPPER LIMB : 

VENOUS RETURN FROM UPPER LIMB The veins of upper limb divided into two groups; deep and superficial veins; The deep veins follow the course of the arteries and have same names; Palmar metacarpal vein Deep palmar venous arch Ulnar and radial veins Brachial vein Axillary vein Subclavian vein

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The superficial veins are; Cephalic vein Basilic vein Median vein Median cubital vein

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Cephalic vein: begins back of the hand where it collects blood from superficial veins. In front of the elbow it gives off a branch called as median cubital vein and joins basilic vein. Basilic vein: begins back of hand and joins axillary vein. It recieves blood from inner aspect of hand, forearm and arm. There are many small vein which links to cephalic and basilic vein.

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Median vein: begins at palmar surface of hand, ascends on the front of forearm and ends in the basilic vein. Brachiocephalic vein: formed by subclavian and internal jugular vein. Superior vena cova: formed when two brachio cephalic veins unite. It drains into rt atrium.