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Study
The Human Body
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These organisms are able to survive without the help of other cells
unicellular organisms
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Living things made of more than one cell are called....
multicellular organisms
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The cells of these organisms cannot survive on their own.
Multicellular organisms
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The 2 things that every cell in our body needs.
Oxygen and nutrients
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Which organ pumps blood throughout the body?
heart
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These blood vessels carry oxygen away from the heart to all the cells of the body.
Arteries
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What is the large tube that connects the mouth to the stomach called?
esophagus
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Another word for the trachea.
Windpipe
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Which intestine is fatter?
large intestine
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What gas do we exhale (breath out)?
carbon dioxide
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These organisms have specialized cells (they only have one job they know how to do
multicellular organisms
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Which intestine is the longest?
small intestine
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These blood vessels carry carbon dioxide back to the heart and lungs.
Veins
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What gas do we inhale (breath in)?
oxygen
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The first place digestion of food begins
mouth
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Which system does the circulatory system work closely together with?
Respiratory system
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Which of these organs is NOT part of the digestive system?
trachea
large intestine
esophagus
small intestine
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What part of the digestive system chews the food?
teeth
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Why can bateria survive without the help of other organisms?
because their cells are larger than cells of other organisms
because they are multicellular
because they are a specific kind of plant
because they can carry out all life processes
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This long, stretchy pipe connects our mouth to our stomach
esophagus
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What is the liquid in your mouth called?
saliva
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Living things made of only one cell are called....
unicellular organisms
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What is the main organ used for breathing?
lungs
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Correctly name the order food travels through the digestive system.
Mouth, esophagus, stomach, small intestine, large intestine
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Which system is responsible for breathing?
respiratory system
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The waste gas that our body does not need
carbon dioxide
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The digestive system breaks down our food into...
oxygen and carbon dioxide
nutrients and oxygen
oxygen and nutrients
nutrients and waste
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The gas that every cell in our body needs
oxygen
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Which of these are parts of the respiratory system?
stomach and esophagus
muscles and nerves
lungs and mouth
heart and blood
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What is the liquid is inside your stomach that breaks down food?
acid
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Which system is responsible for circulating blood throughout the body?
circulatory system
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What is the main purpose of the digestive system?
to break down food into nutrients and energy
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