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MUSCLES 4/11/2016 1 The human body 4/11/2016 2 Did anyone watch any sporting event this past week? Does anyone go to dance classes, karate or any other athletic event? Did anyone have a game this week or weekend that they played in? Before you start any activity, what should you do first?? 4/11/2016 3 STRETCH 4/11/2016 4 Why should we stretch? ? ? ? ? ? ? 4/11/2016 5 What are some of the things that we use our muscles for? 4/11/2016 • Talking • Digesting • Walking • Coloring • Breathing • Riding bikes • Smiling • Blinking • Eating • Sneezing • Studying • Raising your hand • Driving • Swimming 6 About how many muscles do you think the human body has? Answer = 650 4/11/2016 7 We have muscles all over our body! Legs Face Tongue Eyes Hands Arms Heart Ears Neck Stomach 4/11/2016 8 How many muscles do you think are in our face and neck? Our face and neck contain about onefourth of the muscles in our body. That is about 162 4/11/2016 muscles. 9 It takes 17 muscles to smile and 43 muscles to frown 4/11/2016 10 What are muscles made of? Muscles are made of hundreds of tiny fibers. 4/11/2016 11 Can you feel some of your muscles? Hold your arms out in front of you. Where in your arm do you feel the muscles move? Move your neck from left to right and up and down. What do you feel? Move your fingers around. Where do you feel those muscles move? Stand on your toes. Do you feel the muscles in the back of your legs? 4/11/2016 12 4/11/2016 13 What do muscles need? Muscles need oxygen in order to work properly. When they do not get enough oxygen, they can get sore or cramp up. When the muscles in your heart do not get enough oxygen, you can have a heart attack. 4/11/2016 14 Yes - Muscles make up about half of your body weight. If Jackie weighed 158 lbs, about how many pounds did her muscles weigh?? 158 2=N 158 / 2 = 79 N = 79 Jackie’s muscles weighed about 79 pounds. 4/11/2016 15 Do muscles pull or push our bones? •Muscles pull in order to make our bones move. •Our muscles usually work in pairs. •One muscle contracts (pulls) while the opposite muscle relaxes 4/11/2016 16 •Your bicep is relaxed •Your Tricep is contracted 4/11/2016 17 3 Types of muscles There are three different types of muscle in our body. Skeletal muscles Smooth muscles Cardiac muscles 4/11/2016 18 •Are voluntary muscles that move bones. •Are called striated because they look striped •Are attached to tendons, which are attached to bones. 4/11/2016 19 4/11/2016 20 Tendons are tough cords that attach muscles to bones. 4/11/2016 21 4/11/2016 22 •Are involuntary muscles that make up the blood vessels, stomach, intestines, and other groups • We can not control our smooth muscles •What are some example of when our smooth muscles are used? To digest food, pump blood,vomit, control bladder, and give birth 4/11/2016 23 4/11/2016 24 •A special kind of involuntary, striated (striped) muscle that makes up the heart. •The muscles in the heart contract in order to pump the blood through your body. •If your muscle stops pumping the blood, you have a heart attack. 4/11/2016 25 3 types of muscle Smooth 4/11/2016 Cardiac Skeletal 26 The cardiac muscles in your heart cause it to beat between 70 and 80 times per minute. 4/11/2016 27 What happens when we do not use our muscles? Our muscles get smaller, which makes them weak. 4/11/2016 28 It is very important for us to take very good care of our bodies. We need to eat healthy foods and exercise our muscles regularly. 4/11/2016 29 Let’s Recap! Check it out! 4/11/2016 30