BPK 142 Chapter Notes - Chapter 9: Costal Cartilage, Acromion, Coracoid Process

• School: Simon Fraser University
• Department: Biomedical Physio & Kines
• Course: BPK 142
• Professor: Ryan Dill

Document Summary

Isometric: constant length under load, eccentric, lengthening under load. Insertion: posterior outer third of clavicle, top of spine of clavicle, actions, upward rotation, elevation and retraction of scapula, serratus anterior muscle, origin, surface of upper nine ribs, side of the chest. Insertion: anterior portion of vertebral border of scapula, actions, protraction and upward rotation of scapula, rhomboid muscle, origin, spinous processes of last cervical and first five thoracic vertebrae. Insertion: medial border of scapula, below spine, action, retraction and downward rotation of scapula, levator scapulae muscle, origin, transverse processes of upper four cervical vertebrae. Insertion: deltoid tuberosity on the middle, lateral surface of humerus, action, anterior, flexion and horizontal flexion, middle, abduction and horizontal extension, posterior, horizontal extension, helps with extension, pectoralis major muscle, origin, clavicular. Inner two thirds of anterior clavicle border: sternal, length of sternum and costal cartilages of first six ribs near.