Cells & Human Body Systems

Erica’s digestive system helps her body get energy from food. How do

the nutrients from food get to the body’s cells?

• The nutrients are distributed by the digestive system to the parts of

  the body that need them.

• The nutrients are picked up and transported around the body by

  blood from the circulatory system.

• The nutrients are absorbed directly into the cells that need them.

• The circulatory system brings nutrients to the digestive system to be

  processed for the cells.

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​ (a)   is/are the basic building blocks of life.

• Cells
• Water
• Food
• Energy
• Organisms

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A structure that performs a specialized function within a cells is know as __________.

• an organelle

• a tissue

• an organ

• an organ system

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Nutrient distribution depends on the____________________ system to deliver nutrients to cells around the

body through the bloodstream. The ____________________ system also

plays a part by supplying the oxygen used in cellular respiration.

Respiration is the process of breaking down nutrients for energy.

• respiratory; lymphatic

• endocrine; circulatory

• lymphatic; respiratory

• circulatory; respiratory

Look above at the diagram of the

lungs. Which level of body

organization do lungs represent?

• organ system

• cell

• organ

• tissue