Exploring Human Body Systems

How does the circulatory system interact with the respiratory system to perform a function necessary for life?

• The circulatory system provides oxygen to the respiratory system.

• The respiratory system supplies oxygen to the blood, which the circulatory system then transports throughout the body.

• The circulatory system removes carbon dioxide from the respiratory system.

• The respiratory system pumps blood to the heart.

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Using a model of the human body, explain how the muscular and skeletal systems work together to facilitate movement.

• The muscular system provides structure, while the skeletal system contracts to move the body.

• The skeletal system provides structure, while the muscular system contracts to move the body.

• The muscular system produces energy, while the skeletal system stores it.

• The skeletal system produces energy, while the muscular system stores it.

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Plan a simple experiment to demonstrate how the nervous system controls the function of another body system.

• Measure how fast your heart beats after running.

• Observe how your hand moves when you decide to pick up an object.

• Record how your stomach digests food.

• Count how many times you blink in a minute.

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Compare the roles of cells, tissues, and organs in the human body using a model.

• Cells are larger than tissues and organs.

• Tissues are made up of organs, which are made up of cells.

• Cells form tissues, tissues form organs, and organs form systems.

• Organs form tissues, which then form cells.

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Explain how the digestive system and circulatory system work together to provide nutrients to the body.

• The digestive system breaks down food, and the circulatory system transports nutrients to cells.

• The circulatory system breaks down food, and the digestive system transports nutrients to cells.

• The digestive system stores nutrients, and the circulatory system uses them.

• The circulatory system stores nutrients, and the digestive system uses them.

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Using a model, describe how the respiratory system and muscular system work together during physical activity.

• The respiratory system provides energy, and the muscular system uses it to move.

• The muscular system provides oxygen, and the respiratory system uses it to move.

• The respiratory system supplies oxygen, and the muscular system uses it to produce energy for movement.

• The muscular system supplies oxygen, and the respiratory system uses it to produce energy for movement.

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How does the nervous system interact with the circulatory system to maintain homeostasis in the body?

• The nervous system controls the heart rate to ensure adequate blood flow.

• The circulatory system controls the brain to ensure proper function.

• The nervous system provides oxygen to the circulatory system.

• The circulatory system provides signals to the nervous system.

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Design a model to show the interaction between the skeletal and circulatory systems.

• The skeletal system produces blood cells that the circulatory system transports.

• The circulatory system provides calcium to the skeletal system.

• The skeletal system pumps blood through the body.

• The circulatory system stores minerals for the skeletal system.

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Explain how the organizational structure of the human body as a multicellular organism supports its function.

• Cells work independently to perform all functions.

• Tissues, organs, and systems work together to perform complex functions.

• Organs are the smallest unit of life and perform all functions.

• Systems are made up of a single type of cell.

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Using a model, analyze how the digestive and nervous systems interact to regulate hunger and digestion.

• The nervous system signals the digestive system to stop working when full.

• The digestive system signals the nervous system to start digestion when hungry.

• The nervous system regulates the speed of digestion based on hunger signals.

• The digestive system controls the brain to regulate hunger.

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