Circulatory and Respiratory Systems

Front

What is the function of valves in veins?

Back

Valves in veins prevent the backward movement of blood inside them.

Front

What part of blood helps it clot when you get cut?

Back

Platelets help blood clot when you get cut.

Front

What system contains blood vessels and the heart?

Back

The circulatory system contains blood vessels and the heart.

Front

What is the part of the lungs where gas exchange occurs?

Back

The alveoli are the part of the lungs where gas exchange occurs.

Front

What is made mostly of water and makes up about 55% of the blood?

Back

Plasma is made mostly of water and makes up about 55% of the blood.

Front

What are the main components of blood?

Back

The main components of blood are red blood cells, white blood cells, platelets, and plasma.

Front

What is the primary function of red blood cells?

Back

The primary function of red blood cells is to transport oxygen from the lungs to the body's tissues.

Front

What is the role of white blood cells in the body?

Back

White blood cells are responsible for fighting infections and protecting the body against diseases.

Front

What is the pathway of blood through the heart?

Back

Blood flows from the body into the right atrium, then to the right ventricle, to the lungs, back to the left atrium, then to the left ventricle, and finally out to the body.

Front

What is the difference between the circulatory system and the respiratory system?

Back

The circulatory system transports blood and nutrients throughout the body, while the respiratory system is responsible for gas exchange (oxygen and carbon dioxide) in the lungs.