Section 3: Trunk Muscles Study the muscles listed in the textbook. Use your textbook as a helpful guide. 1. What muscles of the trunk extend the arm at the shoulder? 2. What muscles elevate your shoulders, such as when you lift up a heavy object? 3. What abdominal muscles work hard to enable you to flex your abdomen during sit-ups? 1. What two muscles are primarily engaged in inspiration, which is the process of breathing in? Section 4: Muscles of the Upper Limb Study the muscles listed in the textbook. Use your textbook as a helpful guide. 1. What muscles of the brachium extend the forearm at the elbow? Laboratory 11 | Muscular System: Skeletal Muscle Gross Anatomy 265 2. What anterior arm muscle can you observe when you flex a heavy object? 3. What action is common among the muscles on the anterior side of the forearm? Section 5: Muscles of the Lower Limb Study the muscles listed in the textbook. Use your textbook as a helpful guide. 1. What muscle is primarily involved in pushing the thigh down when climbing stairs? 2. The word "sartorius" is a Latin word that means pertaining to a tailor. The muscle contracts to rotate your thigh in order to stand up from a cross-legged position, which tailors had to do frequently many years ago. Try this action and palpate the sartorius while you do so. Name one other muscle that contracts to make this movement possible. 3. What is the common insertion of the muscles forming the quadriceps femoris? 266 Muscular System: Skeletal Muscle Gross Anatomy Laboratory 11

1st Edition

ISBN:9781938168130

Author:Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark Womble

Publisher:Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark Womble