Blood vessels and nerves of the arm
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28 terms
Terms | Definitions |
|---|---|
 Right Subclavian Artery | passes below the right clavicle |
| Brachial artery | main artery of upper arm- profunda brachii branches from it |
| Axillary artery | begins at the lateral margin of the first rib, ends at the lower margin of teres major |
| Profunda Brachii (deep brachial) | arises from brachial artery posteromedially, follows radial nerve |
| Radial artery | lateral forearm |
| Ulnar artery | medial forearm |
| Deep palmar arch | formed predominantly by radial artery |
| Superficial palmar arch | formed predominantly by ulnar artery |
| Palmar metacarpal arteries | run from the deep palmar arch |
| common palmar digital arteries | run from superficial palmar arch |
| proper palmar digital | arise from common palmar digital arteries (except little finger) |
| axillary nerve innervates | teres minor, deltoid, skin over deltoid |
| axillary nerve root | C5-6 |
| musculocutaneous nerve innervates | upper arm flexors, lateral forearm skin |
| musculocutaneous nerve root | C5-7 |
| radial nerve innervates | upper and forearm extensors, posterior arm skin to wrist, dorsal hand, digits 1-3, base of thumb |
| radial nerve root | C5-T1 |
| Median nerve innervates | forearm flexors, medial palmar hand skin, dorsal digits 1 to 3.5 |
| median nerve root | C6- T1 |
| Ulnar nerve innervates | most intrinsic hand muscles, some forearm flexors, dorsal and plantar skin of hand, digits 4-5 |
| Ulnar nerve root | C8- T1 |
| common causes of nerve injury | Road traffic accidents, Obstetric palsies |
| superior plexus lesions | C5-6 Erb's palsy (waiter's tip) axillary and musculocutaneous nerves |
| inferior plexus lesions | C8-T1 Klump's palsy (claw hand) ulnar and musculocutaneous nerves |
| axillary nerve damage | fractured neck of femur, dislocation, paralysis/loss of sensation to shoulder |
| radial nerve damage | crutch damage, wrist drop |
| Ulnar nerve damage | dislocated elbow, fracture, funny bone damage, claw hand |
| Median nerve damage | damage at elbow or wrist, ape hand |
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