dermis (a) joint cavity Food for Thought 9. The skeletal muscle that flexes the forearm after pronation (palm down posit

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dermis (a) joint cavity Food for Thought 9. The skeletal muscle that flexes the forearm after pronation (palm down position as in a pull-up) is the brachialis. Its origin is the humerus, and the insertion is the upper front of the ulna. Identify the class of lever involved and explain why you made this choice. (c) (d) (e) (f) (Photo by D. Morton.) epidermis epiphysis of bone (periosteum) (Photo by D. Morton.) (diaphysis (skeletal muscles) of bone) (b) 10. Search the Internet for websites that describe diseases of bones (e.g., osteoporosis) and of skeletal muscles (e.g., muscular dystrophy). List two websites and briefly summarize their contents. http:// http://
Support and Movement: Human Skeletal and Muscular Systems 9.2 Leverage and Movement 5. Define the following terms: EXERCISE POST-LAB QUESTIONS 9.1 Adult Human Skeleton 1. Match the following bones to their location in the body. Bone Location Radius a. Pectoral girdle Coxal bone b. Leg Ribs c. Axial skeleton d. Arm Scapula Fibula e. Pelvic girdle 2. Label this photo of a femur that has been sawed in half lengthwise with compact bone and spongy bone. marrow cavity 3. Identify the bones indicated in this photo (top of next page). 4. Label the fibrous capsule and synovial mem- brane of this joint (middle of next page). (Photo by D. Norton.) a. The insertion of a skeletal muscle b. The origin of a skeletal muscle C. The action of a skeletal muscle 6. Explain the difference between isometric and isotonic contractions. How are both important to normal body movements? 7. Draw and label the structures of a typical skel- etal muscle organ. 9.3 Walking 8. In your own words, describe one step in the walking cycle.
dermis TS VES (a) joint cavity Food for Thought 9. The skeletal muscle that flexes the forearm after pronation (palm down position as in a pull-up) is the brachialis. Its origin is the humerus, and the insertion is the upper front of the ulna. Identify the class of lever involved and explain why you made this choice. (a) (b) (c) (d) (f) (Photo by D. Morton.) epidermis epiphysis of bone (periosteum) 500 520 (Photo by D. Morton.) (diaphysis (skeletal muscles) of bone) (b) 10. Search the Internet for websites that describe diseases of bones (e.g., osteoporosis) and of skeletal muscles (e.g., muscular dystrophy). List two websites and briefly summarize their contents. http:// http://