ANAT20006 Lecture Notes - Lecture 16: Ulnar Nerve, Vena Comitans, Brachial Plexus

• School: University of Melbourne
• Department: Anatomy and Neuroscience
• Course: ANAT20006
• Professor: Charles Sevigny

Document Summary

Radial (left) and ulnar (larger) artery- can get pulse from either. If vessel stretched, it constricts and blood supply is lost so muscles contract. Can happen if scaphoid fractures and bone dies (avascular necrosis) Superficial: dorsal venous arch, cephalic (head side, basilic (base, median cubital. Venae comitantes with arteries in between. Muscular venous pump median cubic- when taking blood. Cervical and thoracic segments (c5-t1) via anterior rami. Anterior arm flexor muscles of arm and lateral skin of forearm. Anterior forearm muscles, under carpal tunnel, thumb. Pressure can constrict the nerve in carpal tunnel and cause pins and needles or pain. Hand intrinsic, over retinaculum, medial 1. 5 digits. Abductor muscle, deltoid, skin where tattoo goes. Injury in dislocation or fracture of surgical neck. Damage if humeral shaft fracture or compression (palsy), wrist drop- can"t extend wrist. Lateral flexion of head from shoulder causes extension at elbow, slightly pronated (waiters tip)