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GR 4 Unit 6: Life Science - Human Body (Apr. 20 - May 28)

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Essential Questions

What are the systems of the human body and what are they composed of? 
How has health care changed our lives?

Vocabulary

·      organ – a part of the body that has a specific job

·      digests – breaks down

·      digestive system – the system that digests food into forms that your body can use

·      stomach – an organ where the first part of digestion occurs

·      small intestines – an organ where most of the digestion takes place

·      large intestines – an organ that absorbs the water from the remaining undigested waste

·      skeletal system – the system that supports the body, helps you move, and protects your body

·      bones – are major parts of the skeletal system that aid in supporting the body

·      joints – are parts of the skeletal system where parts of the skeleton are fitted together

·      muscular system – the system that helps the body move

·      muscles – a major part of the muscular system that contract to produce movement

·      nervous system – a system that is the control center of the body and carries signals from one part of the body to another

·      brain – one of the major organs of the nervous system that is an organ of soft nervous tissue found in the skull and is the body’s control center

·      spinal cord – one of the major parts of the nervous system that is  bundle of nerve fibers and tissue found in the spine and connects all parts of the body to the brain

·      nerves – one of the major parts of the nervous system that transmits messages to the brain and spinal cord

·      respiratory system – the system that allows you to inhale and exhale

·      lungs – a major organ of the respiratory system that draws air in so that oxygen can be passed into the blood and then removes carbon dioxide from the body

·      inhale – to breathe in

·      exhale – to breathe out

·      circulatory system – moves blood throughout the body (carries oxygen and nutrients)

·      heart – a major organ of the circulatory system that pumps blood throughout the body

·      blood – a red liquid in the arteries and veins that carries oxygen to and carbon dioxide from the tissues of the body

·      oxygen – a colorless, odorless, and tasteless gas that we breathe

·      nutrients – provide nourishment that is important for growth and life

·      health – the state of being free from illness or injury


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