Human body systems

The smallest units or parts of living things; the body's building blocks.

• cells
• organs
• tissues
• system

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A collection of the same kinds of cells working together to do the same job.

• cells
• tissues
• organs
• system

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What are some major parts of the digestive system?

• kidneys, liver, bladder, and skin
• brain, spinal cord, and nerves
• mouth, stomach, large intestine, small intestine
• heart, arteries, and veins

What kind of information can be sent through the nervous system?

• hearing a fire alarm
• feeling a sharp pencil tip
• smelling pancakes or bacon
• all of the above and much more

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Which body system lets you breathe oxygen in and carbon dioxide out?

• respiratory system
• circulatory system
• excretory system
• none of the above

What are kidneys?

• curvy shapes that look like a human ear
• a pair of respiratory organs used for breathing
• red beans often used in chili and salads
• a pair of excretory organs that filter waste products from blood

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Which body system could you not live without?

• digestive system
• nervous system
• respiratory system
• none of the above

What makes the human body most similar to a busy city?

• Both have a lot of movement, lights, and noise.
• Both are found in every part of the world.
• Both have many systems and many things that keep moving all of the time.
• Both have circulatory and muscular systems.

______________ are found in internal organs that are responsible for essential life processes.

• bones
• muscles
• eyes
• toes

Name 2 organs in the body that are muscles.

• heart and lungs
• lungs and intestines
• intestines and liver
• stomach and heart