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Lesson

Human Body Systems

Connect the main organs with their jobs and discover how body systems work together.

30min lesson

Objectives3 goals Lesson6 blocks Review11 assets Practice39 items

Learning objectives

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3 goals

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Match major organs to their body systems and functions.
Explain how digestion, breathing, and blood circulation support body cells.
Describe how nerves, muscles, bones, and joints work together.

Lesson

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6 sections

Concept

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An organ is a body part with a particular job. A system is a group of organs working together. The digestive system breaks food down and absorbs nutrients. Teeth and saliva begin digestion in the mouth; the stomach mixes food with digestive juices; the small intestine completes much of digestion and absorbs most nutrients. The respiratory system moves air into and out of the lungs. Oxygen passes into the blood at tiny air sacs called alveoli, while carbon dioxide passes from blood into the lungs. The circulatory system includes the heart, blood, and blood vessels. The heart pumps blood to carry oxygen and nutrients around the body. The urinary system removes wastes and extra water from the blood. The kidneys make urine; the bladder stores it. Kidneys are not digestive organs.

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6 lesson sections6 cards / 5 notes20 MCQs / 19 written questions

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Human Body and Health

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Human Body Systems

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Human Body Systems

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