Respiratory + Circulatory Systems Review

Front

What is the main function of the respiratory system?

Back

To facilitate the exchange of oxygen and carbon dioxide between the body and the environment.

Front

What is the role of the circulatory system?

Back

To transport nutrients, gases, hormones, and waste products throughout the body.

Front

What are alveoli?

Back

Tiny air sacs in the lungs where gas exchange occurs.

Front

What is the process of diffusion in the context of the respiratory system?

Back

The movement of oxygen from the alveoli into the blood and carbon dioxide from the blood into the alveoli.

Front

What is the dependent variable in an experiment?

Back

The variable that is measured or observed in response to changes in the independent variable.

Front

What is the hypothesis in a scientific experiment?

Back

A testable statement predicting the relationship between variables.

Front

How does exercise affect respiratory rate?

Back

Exercise increases the respiratory rate to meet the higher oxygen demand of the body.

Front

What is the primary gas exchanged in the lungs?

Back

Oxygen is absorbed into the blood, and carbon dioxide is released from the blood.

Front

What is the significance of the heart in the circulatory system?

Back

The heart pumps blood throughout the body, supplying oxygen and nutrients while removing waste.

Front

What is the relationship between the respiratory and circulatory systems?

Back

They work together to ensure that oxygen is delivered to cells and carbon dioxide is removed.