Arterial Blood supply to upper limbs.pptx

Arterial supply to upper limbs

1. Blood supply to upper limbs Musungu Vincent 01/02/2025 20:40 1

2. Arterial blood supply Originates from arch of aorta: Right brachiocephalic trunk Right subclavian artery, Right common carotid aa. Left subclavian artery, Left common carotid artery Blood supply to upper limbs originates from the left and right subclavian artery The subclavian aa. crosses the lateral border of the first rib to become the axillary artery Axillary aa. has 3 parts (divided by the pectoralis minor): 1 st part (before pectoralis minor) 2 nd part (beneath the pectoralis minor) 3 rd part below the pectoralis minor 01/02/2025 20:40 2

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4. Blood supply to breast 02/02/2025 14:39 4

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12. Branches of axillary artery Has six branches 1 st part (1 branch- sup. thoracic aa) 2 nd part (2 branches- Acromiothoracic trunk/ thoracoacromial artery Lateral thoracic artery 3 rd part (3 branches) Ant & pos circumflex humeral artery (around surgical neck) Subscapular aa (largest branch)----2 branches: Circumflex scapular aa Thoracodorsal aa. Brachial aa begins at lateral edge of teres major muscle 01/02/2025 20:40 12

13. Brachial aa Axillary aa becomes the brachial aa at the level of lower border of teres major muscles (lower boundary of axillary) and ends at neck of radius by dividing into radial and ulnar aa. Has 4 branches Profunda brachii aa: largest, passes posteriorly, supply post compartment of arm. 2 branches---radial collateral aa, middle collateral aa Nutrient aa to humerus Inferior ulnar collateral aa Superior ulnar collateral aa 01/02/2025 20:40 13

14. Blood supply to elbow joint Supplied by anastomosis of Sup collateral ulnar aa/post recurrent ulnar aa Inf collateral ulnar aa/ant recurrent ulnar aa Recurrent radial aa/radial collateral aa Recurrent post interosseous aa/middle collateral aa 01/02/2025 20:59 14

15. Radial and ulnar aa At the level of radial head, the brachial aa divides into: Radial aa Ulnar aa Radial aa gives off a recurrent radial aa (contributes to arterial supply to elbow joint) Ulnar aa gives off: Recurrent ulnar aa which divides into ant and post recurrent ulnar aa which contributes to arterial supply to elbow joint Common interosseous aa which divides into Ant. interosseous (runs along interosseous membrane) Post. interosseous aa (gives off recurrent post interosseous aa which contribute to arterial supply to elbow) 01/02/2025 21:09 15

16. Arterial supply to hand/wrist 01/02/2025 20:40 16

17. Venous drainage of upper limb (forearm) Consist of superficial and deep venous system Superficial Begins as Dorsal digital veins  dorsal metacarpal veins dorsal venous network Palmar digital veinsIntercapitular branchespalmar venous network Superficial venous system has 2 main veins (joined at cubital fossa (sometime with median cubital vein) Cephalic Basilic Median antebrachial vein (split into 2 connect the cephalic and basilic vein) 01/02/2025 22:02 17

18. Veins in arm Basilic vein runs medially, pierces brachial fascia to enter deep compartment of arm to join the deep brachial veins which are paired and accompany brachial aa. Drain in axillary vein at inferior margin of teres minor Cephalic vein runs laterally to biceps brachii to reach deltopectoral groove to join into the axillary vein via deltopectoral triangle/clavipectoral triangle (covered by clavipectoral fascia) Boundaries of clavipectoral triangle Clavicle Deltoid muscle Pectoralis major muscle Axillary vein continues as subclavian vein which joins the internal jugular vein brachocephalic veinssup VC 01/02/2025 22:18 18

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20. Deep veins Arise from the superficial and deep palmer venous arches Which join to form the ulnar and radial vein Veins that accompany the aa are called venae comitantes (accompanying veins) Before elbow, radius and ulnar veins join to form paired brachial veins which accompany the brachial aa. 01/02/2025 22:28 20

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