Arises from cervical plexus (C3, C4) and innervates skin over upper pectoral, deltoid, and outer trapezius areas.
Medial Brachial Cutaneous Nerve
Arises from medial cord of brachial plexus and innervates medial side of arm.
Medial Antebrachial Cutaneous Nerve
Arises from the medial cord of the brachial plexus and innervates the medial side of forearm.
Lateral Brachial Cutaneous Nerve
Arises from axillary nerve and innervates lateral side of arm
Lateral Antebrachial Cutaneous Nerve
Arises from musculcutaneous nerve and innervates lateral side of forearm.
Posterior Brachial and Antebrachial Nerves
Arise from radial nerve and innervate posterior sides of arm and forearm respectively.
Lateral cutaneous branch of second intercostal nerve emerging from the second intercostal space and may communicate with the medial brachial cutaneous nerve.
What are the 7 Cutaneous nerves of the upper limb?
- 1) Supraclavicular (C3, C4)
- 2) Medial Brachial (C8-T1)
- 3) Medial Antebrachial (C8-T1)
- 4) Lateral Brachial (C5-C6)
- 5) Lateral Antebrachial (C6-C7)
- 6) Intercostobrachial (T12)
- 7) Posterior Brachial and Antebrachial Nerves (C5-C8)
- Radial continuation of dorsal venous network of hand, runs on lateral side and often connected with basilic vein by the median cubital vein in front of the elbow.
- Ascends along lateral surface of biceps, pierces brachial fascia, and lies in deltopectoral triangle with the deltoid branch of the thoracoacromial trunk.
- Pierces costocoracoid membrane of the clavipectoral fascia and ends in axillary vein.
- Arises from dorsal venous arch of hand and accompanies medial antebrachial cutaneous nerve along ulnar border of forearm and pass anterior to medial epicondyle.
- Pierces deep fascia of arm and joins brachial veins to form axillary vein at lower border of teres major muscle.
Median Cubital Vein
- Connects cephalic vein to basilic vein over cubital fossa.
- Superficial to bicipital aponeurosis and thus separates it from brachial artery, which is vulnerable to puncture during IV placement.
Median Antebrachial Vein
Arises in the palmar venous network, ascends on the front of the forearm and terminates in the median cubital or basilic vein.
Dorsal Venous Network
Network of veins formed by dorsal metacarpal veins that receive dorsal digital veins and continues proximally as cephalic and basilic veins.
Lymphatics of finger
Drain into plexuses on dorsum and palm of hand which form medial and lateral lymph vessels
Medial Group of Lymphatic Vessels
Acompanies basilic vein; passes through cubital or supratrochlear nodes and ascends to enter lateral axillary nodes which drain first into central axillary nodes then apical axillary nodes.
Lateral Group of Lymphatic Vessels
Accompanies cephalic vein and drains into lateral axillary nodes and also into deltopectoral (infraclavicular) node then into apical nodes.