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Name __________________________ Monday, 11-28-16 Packet # 2 - 14 7th Science - ________ AIM: Define and describe the muscular system. Explain how the muscular system and skeletal systems work together. Quote of the Day: “A dream doesn't become reality through magic; it takes sweat, determination and hard work.” - Colin Powell Do Now Read/annotate the text before answering the questions that follow. Key definition: Vertebrate: Animals with an internal skeleton made of bone The muscular system is an organ system consisting of skeletal, smooth and cardiac muscles. It permits movement of the body, maintains posture, and circulates blood throughout the body. The muscular system in vertebrates is controlled through the nervous system, although some muscles (such as the cardiac muscle) can be completely independent. Together with the skeletal system it forms the musculoskeletal system, which is responsible for movement of the human body. There are three different types of muscles: skeletal muscles, cardiac or heart muscles, and smooth muscles. Muscles provide strength, balance, posture, movement and heat for the body to keep warm. 1. What type of muscles make up the muscular system? ____________________________________ ____________________________________ ____________________________________ 2. What does the muscular system do? It permits ___________________________________________________ It helps us to maintain ___________________ It circulates _________________________________________________ 1 3. Name the three different types of muscles: _____________________________ _____________________________ _____________________________ 4. Muscles provide __________________________________________________________________ __________________________________________________________________ After Do Now Review – With a Partner – Read the following line from the text again: The muscular system in vertebrates is controlled through the nervous system, although some muscles (such as the cardiac muscle) can be completely independent. What does it mean for a muscle to be independent? Why would a cardiac muscle be independent? Be prepared to discuss. PPT – Take notes in the spaces provided while we discuss the PowerPoint The muscular system creates the force that enables the body to move and carry out different functions related to movement Muscles are all over your body and cause its movement! There are TWO types of muscle 1. Involuntary: muscles that work automatically without you telling them to (breathing, eating, etc.) EXAMPLE: Your Heartbeat 2. Voluntary: muscles that you have to tell to move EXAMPLE: Smiling Three types of muscle tissue Type Voluntary/Involuntary 2 Skeletal Muscles The only muscle you can control Includes your muscles in your arms and legs, as well as facial muscle that control your smile and eye lids Smooth Muscles You do not control these muscles Involuntary Includes muscles in your stomach that digest food Cardiac Muscles You cannot control this muscle Includes the muscle tissue that make up your heart Muscles work in pairs. As one muscle expands, the other contracts Similar to your lungs and the diaphragm **Insert Khan Academy INDEPENDENT PRACTICE PART 1: Fill-in-the-blank 1. The ___________________________________ system creates the force that enables the body to move and carry out different functions related to movement. TERM BANK Homeostasis Muscular Involuntary Skeletal Pairs Movement Voluntary Expands Cardiac Smooth 2. ____________________________ muscles are involuntary and include muscles in your stomach that digest food. 3 3. Muscles work in ___________________, and as one muscle ________________________, the other contracts. 4. ___________________________________ muscles are muscles that work automatically without you telling them to work (breathing, eating, etc.). 5. The only type of muscle you can control is your _______________________________ muscles, which include muscles in your arms and legs, as well as face muscles. 6. The muscles in your heart are known as _____________________ muscles, and you cannot control them. 7. All the body’s organs systems work together to ensure you are alive and well in a process known as ________________________________. 8. Muscles are all over your body and cause its __________________________. 9. __________________________________ muscles are muscles that you have to tell to move, like your face muscles when you smile. PART 2: True/False. For each statement that is false, RE-WRITE THE ENTIRE STATEMENT so that it is true. 10. ______________ Muscles work in pairs, and as one muscle expands, the other contracts. 11. ______________ Involuntary muscles are the muscles that you have to tell to move, like smiling. 12. ______________ The circulatory system creates the force that enables the body to move. 13. ______________ Cardiac muscle makes up the heart and is involuntary. 14. ______________ Skeletal muscles are the only type of muscles that are voluntary. 15. ______________ Skeletal muscles include muscles in your stomach that digest food. 4 PART 3: Multiple-choice. Use MCS to answer the following choices. 16. Which of these is NOT a job of the muscular system? a. Movement b. Posture c. Strength d. Making blood cells 17. These are the heart muscles a. Skeletal b. Voluntary c. Smooth d. Cardiac 18. Which describes the three body systems that work together to move your hand? a. Circulatory, muscular, respiratory b. Nervous, muscular, skeletal c. Skeletal, circulatory, nervous d. Muscular, circulatory, skeletal PART 4: Fill in the blanks describing the three types of muscle tissue below. Smooth Name Image Moveme nt Exampl e Voluntary Heart tissue 5