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Science
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11th Grade
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16 Slides • 4 Questions
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the musculoskeletal system
part 1
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What is the musculoskeletal system?
The musculoskeletal system is a combination of two body systems:
The muscular system and the skeletal system.
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What is the difference?
The muscular system: contains the skeletal, cardiac and smooth muscles.
The skeletal system: contains the bones, and the joints, tendons ligaments and cartilage that connect the bones together.
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The muscular system
The job of the muscles in the musculoskeletal system is to allow people to move, talk and chew food.
They are in involved in circulation, respiration and digestion.
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Movement
The main function of the muscular system is to create movement.
Movement is possible because of the skeletal muscles.
The muscles are attached to the bones and when they contract, they pull on the bones to make them move.
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Circulation
The heart is a muscle that pumps blood around the body also known as a cardiac muscle.
The cardiac muscles contract (get smaller) and relax and this is how the heart pumps blood around your body.
Smooth muscle can be found in the arteries and veins around the heart.
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Respiration
The diaphragm is a large muscle which is below the lungs and helps our body with the breathing process.
The diaphragm contracts and relaxes to push air in and out of the lungs which enables us to breathe.
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Digestion
Smooth muscles in the body’s stomach and intestines help to move and break up food.
The muscles contract and relax to move food around the digestive system to mix the food inside the stomach.
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the musculoskeletal system
part 1
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