BPK 143 Chapter Notes - Chapter 3: Abdomen, Hip, Vastus Intermedius Muscle

• School: Simon Fraser University
• Department: Biomedical Physio & Kines
• Course: BPK 143
• Professor: Tony Leyland

Document Summary

Table 3. 1 required muscle names and muscle actions. Sternocleidomastoid: both sides working together produce flexion at the neck (cervical flexion). The rightsternocleidomastoid produces rotation to the left and lateral flexion to the right. The leftsternocleidomastoid produces rotation to the right and lateral flexion to the left. Deltoid (anterior, medial (or lateral), and posterior heads: abduction of the arm (all sections). The anterior fibres flex and horizontally adduct arm and the posterior fibres extend and horizontally abduct the arm. This muscle should not be treated as a single muscle due to the opposite action of the anterior and posterior fibres. Latissimus dorsi: extension and adduction at the shoulder joint. Pectoralis major (clavicular head and sternal head) Biceps brachii: flexion, horizontal adduction and adduction at the shoulder joint. When the shoulder is flexed the pectoralis major will also act as an extensor.