Human Anatomy
5th Edition
ISBN: 9780073403700
Author: Kenneth S. Saladin Dr.
Publisher: McGraw-Hill Education
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Chapter 10.2, Problem 1AWYK
Summary Introduction
To write:
About the effort, fulcrum and resistance in the plantarflex of the foot. The class of lever used in this.
Introduction:
Mechanical advantage can be defined as the ratio of the force created by a machine to the applied force. It is determined as the length of the effort arm that is divided by the length of the resistance arm. It is used in measuring machine performance.
Fulcrum can be defined as the point against which a lever is placed to get a turn or is supported.
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An isometric exercise is one in which the joint angle does not change during the application of muscle force. For instance, you can join your hands together, pushing down with one hand and pushing up with the other. In each arm, the muscles that provide the force are connected to the bones of the arm by tendons. If you increase the forces but keep the angles the same, the muscles will still contract. Explain how this is possible.
Sit on the edge of a desk with your feet off the floor. Plantarflex your foot. Where is the effort? Where is the fulcrum? Where is the resistance? Which class of lever does the foot represent in plantar flexion?
What type of movement is shown in the picture below:
Rotation
Circumduction
O Plantar Flexion
O Supination
Chapter 10 Solutions
Human Anatomy
Ch. 10.1 - What general function of muscular tissue...Ch. 10.1 - What are the basic structural differences between...Ch. 10.1 - Prob. 3BYGOCh. 10.1 - State five special properties of muscular tissue...Ch. 10.2 - Prob. 1AWYKCh. 10.2 - Prob. 5BYGOCh. 10.2 - Prob. 6BYGOCh. 10.2 - Answer the following questions to test your...Ch. 10.2 - Answer the following questions to test your...Ch. 10.2 - Answer the following questions to test your...
Ch. 10.2 - Prob. 10BYGOCh. 10.2 - Answer the following questions to test your...Ch. 10.3 - Prob. 12BYGOCh. 10.3 - Prob. 13BYGOCh. 10.3 - Prob. 14BYGOCh. 10.3 - Answer the following questions to test your...Ch. 10.3 - Prob. 16BYGOCh. 10.3 - Prob. 17BYGOCh. 10.4 - Prob. 1AWYKCh. 10.4 - What role does the sarcoplasmic reticulum play in...Ch. 10.4 - Prob. 19BYGOCh. 10.4 - Prob. 20BYGOCh. 10.4 - Answer the following questions to test your...Ch. 10.4 - Prob. 22BYGOCh. 10.5 - Prob. 23BYGOCh. 10.5 - Prob. 24BYGOCh. 10.5 - Prob. 25BYGOCh. 10.5 - Prob. 26BYGOCh. 10.6 - Answer the following questions to test your...Ch. 10.6 - What is the principal difference between the way...Ch. 10.6 - Prob. 29BYGOCh. 10.6 - Prob. 30BYGOCh. 10.6 - Prob. 31BYGOCh. 10 - The scope of myology and of the term muscular...Ch. 10 - Differences between skeletal, cardiac, and smooth...Ch. 10 - Muscle Types and Functions (p. 236) The multiple...Ch. 10 - Five physiological properties that muscle cells...Ch. 10 - General Anatomy of Muscles (p. 237) The tissues...Ch. 10 - General Anatomy of Muscles (p. 237) The...Ch. 10 - General Anatomy of Muscles (p. 237) The separation...Ch. 10 - General Anatomy of Muscles (p. 237) Orientation of...Ch. 10 - General Anatomy of Muscles (p. 237) The difference...Ch. 10 - General Anatomy of Muscles (p. 237) How an...Ch. 10 - General Anatomy of Muscles (p. 237) The...Ch. 10 - General Anatomy of Muscles (p. 237) Some muscle...Ch. 10 - General Anatomy of Muscles (p. 237) The meaning of...Ch. 10 - General Anatomy of Muscles (p. 237) The functional...Ch. 10 - General Anatomy of Muscles (p. 237) The...Ch. 10 - General Anatomy of Muscles (p. 237) The...Ch. 10 - General Anatomy of Muscles (p. 237) How to...Ch. 10 - Prob. 10.2.14AYLOCh. 10 - The internal ultrastructure of a skeletal muscle...Ch. 10 - The relationship between myofilaments, myofibrils,...Ch. 10 - Prob. 10.3.3AYLOCh. 10 - Prob. 10.3.4AYLOCh. 10 - Prob. 10.3.5AYLOCh. 10 - Prob. 10.3.6AYLOCh. 10 - Prob. 10.3.7AYLOCh. 10 - Prob. 10.3.8AYLOCh. 10 - Prob. 10.3.9AYLOCh. 10 - The structure of a neuromuscular junction and the...Ch. 10 - Prob. 10.3.11AYLOCh. 10 - The components of a motor unit; what is meant by...Ch. 10 - Prob. 10.3.13AYLOCh. 10 - Prob. 10.4.1AYLOCh. 10 - Prob. 10.4.2AYLOCh. 10 - Prob. 10.4.3AYLOCh. 10 - Prob. 10.4.4AYLOCh. 10 - Prob. 10.4.5AYLOCh. 10 - Prob. 10.4.6AYLOCh. 10 - Prob. 10.4.7AYLOCh. 10 - Prob. 10.4.8AYLOCh. 10 - Cardiac and Smooth Muscle (p. 254) The structure...Ch. 10 - Prob. 10.5.2AYLOCh. 10 - Prob. 10.5.3AYLOCh. 10 - Prob. 10.5.4AYLOCh. 10 - Prob. 10.5.5AYLOCh. 10 - Prob. 10.5.6AYLOCh. 10 - Prob. 10.6.1AYLOCh. 10 - Prob. 10.6.2AYLOCh. 10 - Prob. 10.6.3AYLOCh. 10 - The mode of inheritance and pathology of muscular...Ch. 10 - Prob. 10.6.5AYLOCh. 10 - Prob. 1TYRCh. 10 - Muscle cells must have all of the following...Ch. 10 - Prob. 3TYRCh. 10 - Prob. 4TYRCh. 10 - Which of the following muscle proteins is not...Ch. 10 - Prob. 6TYRCh. 10 - Prob. 7TYRCh. 10 - Single-unit smooth muscle cells can stimulate each...Ch. 10 - Prob. 9TYRCh. 10 - Prob. 10TYRCh. 10 - Prob. 11TYRCh. 10 - Prob. 12TYRCh. 10 - Prob. 13TYRCh. 10 - Prob. 14TYRCh. 10 - Prob. 15TYRCh. 10 - Prob. 16TYRCh. 10 - Prob. 17TYRCh. 10 - Prob. 18TYRCh. 10 - Prob. 19TYRCh. 10 - A wave of contraction passing along the esophagus...Ch. 10 - Prob. 1BYMVCh. 10 - Prob. 2BYMVCh. 10 - Prob. 3BYMVCh. 10 - State a meaning of each word element and give a...Ch. 10 - Prob. 5BYMVCh. 10 - Prob. 6BYMVCh. 10 - Prob. 7BYMVCh. 10 - Prob. 8BYMVCh. 10 - Prob. 9BYMVCh. 10 - Prob. 10BYMVCh. 10 - Prob. 1TOFCh. 10 - Prob. 2TOFCh. 10 - Prob. 3TOFCh. 10 - Determine which five of the following statements...Ch. 10 - Prob. 5TOFCh. 10 - Prob. 6TOFCh. 10 - Prob. 7TOFCh. 10 - Prob. 8TOFCh. 10 - Prob. 9TOFCh. 10 - Prob. 10TOFCh. 10 - In a baseball game, the pitcher hits the batter in...Ch. 10 - Prob. 2TYCCh. 10 - Prob. 3TYCCh. 10 - Prob. 4TYCCh. 10 - Prob. 5TYC
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- The elbow is an example of which type of joint? hinge pivot saddle glidingarrow_forwardConsider the movements of plantar flexion and dorsiflexion. Propose a reason why there are far more (and stronger) muscles involved in plantar flexion?arrow_forwardYour knees should be bent at a comfortable and greater than 90 degrees flexion when sitting in front of a computer Reasons why?arrow_forward
- Discuss the functions of the different types of levers found in our body. How do these different types of levers make our body more useful. Explain each type of lever, the position of the fulcrum, load, and applied force and give an example of each.arrow_forwardwhat type of joint movement is used to shut off a light? what type is used to comb your hair?arrow_forwardGIve specific joint as an exampleof each type of synovial joint movement: 1. Gliding 2. Angular Movement 3. Rotationarrow_forward
- The hip joint is diagramed on the right. The hip abductor plays a role in stabilizing your leg against the downward force of body mass. The hip abductor, hip joint and body mass form a Hip Abductor Hip Joint Body Mass O Type II lever O Type I lever O Type III leverarrow_forwardLet your partner place a heavyweight (ex. books) on your hand which is too heavy to lift. Keep your elbow on the table but try to lift the weights. Observe and feel the muscles of the arm. Can you flex the elbow joint with the heavyweight on your hand? What type of muscle contraction did you perform?arrow_forwardConsider the importance of forearm position (pronation/supination) on the influence of the muscle providing force during flexion of the elbow. 1. Please outline which radioulnar/forearm position would be best to isolate each of the three main elbow flexors AND 2. provide a brief explanation of why hand position makes a difference.arrow_forward
- list three movements for which a relative angle at a particular joint is important and three movements for which absolute angle of a body segment is importance .explain yoour choices.arrow_forwardBased on the lever types we identified, are we at an overall mechanical disadvantage or advantage? Meaning, is our athlete working harder to perform less work, or vice versa? Based on the distribution of lever types throughout our lower body, where might we suggest the athlete focus when exerting greater power onto the ball? Joint Joint Action Primary Mover Resistance Lever Type 1. Flexion 1. Iliopsoas 1. 3rd 2. Extension 2. Gluteus Maximus Weight of leg and 2. 3rd ball Hip 3. Internal Rotation 3. Gracilis 3. 3rd 4. Horizontal 4. Pectineus 4. 3rd Adduction 5. Adductor Longus Weight of lower leg and ball Knee 1. Extension 1. Rectus femoris 1.3rd 1. Plantar Flexion 1. Gastrocnemius Weight of foot 1. 1st Ankle 2. Eversion 2. Peroneus Longus and ball 2.3rdarrow_forwardMany locomotion movements use: O a proximal to distal sequence of lower extremity joint torques O more eccentric than concentric contractions O only concentric contractions O a distal to proximal sequence of lower extremity joint torquesarrow_forward
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