Health Sciences 2300A/B Lecture Notes - Lecture 7: Ulnar Nerve

• School: Western University
• Department: Health Sciences
• Course: Health Sciences 2300A/B
• Professor: Jamie Melling

Document Summary

Lecture 6c: skeletal muscles muscles of the pectoral girdle and upper limbs. Objectives: identify muscular compartments, pectoral or shoulder" girdle, arm or brachium" form elbow to the shoulder, forearm or ante-brachium" from the elbow to the wrist. Within each compartment identify: muscular attachments, common nerve supply, muscular function. Brachial plexus goes to the brachial region . Important in terms of injury: the brachial plexus emerges at five different levels; c5, c6, c7, c8, and t1. Prefixed or post fixed formations in some cases involve. C4 or t2: formed by the anterior divisions of the fifth, sixth, seventh, and eighth cervical nerves and dorsal nerve. Superior fibers (descending)- runs almost from the cervical region the base of the skull to the spinal process. If the scapula pulls upwards it elevation. Middle fibers (horizontal)- in the middle and runs horizontally when the middles are contracted it moves the scapula inwards and moves it towards the spinous processes adduction of the scapula.