JOINTS AND MUSCLES. MUSCLES Types Movement Working Ligaments Tendons.
Muscles
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Transcript of Muscles
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MUSCLES IB SEHS
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STARTER – Group ActivityDecide whether the following statements are true or false:1. There are over 1,000 muscles in your body.2. Skeletal, or voluntary, muscles are the muscles you can control.3. Ligaments connect muscles to bones.4. Your heart is a muscle.5. A muscle gets strained when it is stretched too much.6. A sprain happens when a tendon is stretched too much.7. Muscles that are not used can get smaller and weaker8. You don’t need more than 30 minutes of physical activity every day.9. If something hurts when playing sports, you should play through the pain and it will go away.10. A balanced diet:a) Emphasizes fruits, vegetables, whole grains, and fat-free or low-fat dairy products like milk, cheese,and yogurt.b) Includes protein from lean meats, poultry, seafood, beans, eggs, and nuts.c) Is low in solid fats, saturated fats, cholesterol, salt (sodium), added sugars, and refined grains.d) All of the above
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Answers1. There are over 1,000 muscles in your body. -False. There are over 600 muscles in the body.2. Skeletal, or voluntary, muscles are the muscles you can control. True. You can control your skeletal muscles to walk, run,pick up things, play an instrument, throw a baseball, kick a soccer ball, push a lawnmower, or ride a bicycle3. Ligaments connect muscles to bones. False. Ligaments connect bones to other bones. Tendons connect muscles to bones.4. Your heart is a muscle. True. The heart is a special muscle called “cardiac muscle.” It works constantly to pump bloodthrough your body.5. A muscle gets strained when it is stretched too much. True. Muscles can be strained by stretching them too much, aswhen you lift something that is too heavy.6. A sprain happens when a tendon is stretched too much. False. Sprains happen when ligaments (which connect bones tobones) are stretched too much. A stretching injury to a tendon (which connects a muscle to a bone) is called a strain.7. Muscles that are not used can get smaller and weaker True. If a muscle is not used, it will get smaller and weaker. This isknown as atrophy.8. You don’t need more than 30 minutes of physical activity every day. False. You should get at least 60 minutes of exerciseevery day. It doesn’t have to be a whole hour all at once, but it does need to be in at least 10-minute increments to counttoward your 60 minutes of physical activity per day.9. If something hurts when playing sports, you should play through the pain and it will go away. False. If something starts tohurt, stop playing or exercising. You might just need to rest the injured part, or you might need to see a doctor.10. A balanced diet:a) Emphasizes fruits, vegetables, whole grains, and fat-free or low-fat dairy products like milk, cheese, and yogurt.b) Includes protein from lean meats, poultry, seafood, beans, eggs, and nuts.c) Is low in solid fats, saturated fats, cholesterol, salt (sodium), added sugars, and refined grains.d) All of the above
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Learning ObjectivesEveryone shouldDistinguish between the different types of muscleOutline the general characteristics common to muscletissueMost willIdentify the location of skeletal muscles in various regionsof the bodySome mightExplain the need for antogonistic pairs
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GROUP THOUGHT What do we use our muscles for?
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Pairs activity – can you write adefinition for the words below?Contractility Extensibility Elasticity
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• Contractility- muscles ability to contract and generate force when it is stimulated by a nerve
• Extensibility- muscles ability to be stretched beyond its normal resting length
• Elasticity- muscles ability to return to its original resting length after the stretch is removed.
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Extension and rotation of the thigh
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Soleus
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