Copyright Goodheart-Willcox Co., Inc. May not be reproduced or posted to a publicly accessible website. 84 Anatomy & Physiology Essentials Lab Manual 2. leg extension (knee extension): no weight needed (Figure 6.2B) A. concentric muscle contraction _ ___________________________________________________________________ __________________________________________________________________ B. antagonist muscle _ ___________________________________________________________________ __________________________________________________________________ 3. lateral raise (shoulder abduction): light dumbbell or small classroom object (Figure 6.2C) A. concentric muscle contraction _ ___________________________________________________________________ __________________________________________________________________ B. antagonist muscle _ ___________________________________________________________________ __________________________________________________________________ 4. sit-up (abdominal/vertebral flexion): no weight needed (Figure 6.2D) A. concentric muscle contraction _ ___________________________________________________________________ __________________________________________________________________ B. antagonist muscle _ ___________________________________________________________________ __________________________________________________________________ 5. thigh abduction (hip abduction): no weight needed (Figure 6.2E) A. concentric muscle contraction _ ___________________________________________________________________ __________________________________________________________________ B. antagonist muscle _ ___________________________________________________________________ __________________________________________________________________ Figure 6.2B Saskia D. Richter, author Figure 6.2C Saskia D. Richter, author Figure 6.2D Saskia D. Richter, author Figure 6.2E Saskia D. Richter, author