Breathing and Beating: Exploring Our Respiratory and Cardiovascular Systems

What is the main function of the respiratory system?

• To digest food

• To transport oxygen to the body's cells

• To pump blood throughout the body

• To control body temperature

Which part of the respiratory system is also known as the windpipe?

• Bronchi

• Alveoli

• Trachea

• Larynx

What is the name of the tiny air sacs in the lungs where gas exchange occurs?

• Bronchioles

• Alveoli

• Capillaries

• Ventricles

Which of the following is NOT a part of the cardiovascular system?

• Heart

• Blood

• Blood vessels

• Esophagus

What is the main function of the cardiovascular system?

• To help you breathe

• To produce hormones

• To transport nutrients and oxygen to cells

• To help you digest food

Which organ is responsible for pumping blood throughout the body?

• Liver

• Heart

• Kidney

• Stomach

During gas exchange, what substance do the blood cells take away from the alveoli?

• Carbon dioxide

• Oxygen

• Nitrogen

• Glucose

What type of blood vessel carries blood away from the heart?

• Veins

• Arteries

• Capillaries

• Bronchi

How does the diaphragm help you breathe?

• By filtering the air

• By warming the air

• By moving up and down to change the pressure in the chest cavity

• By pumping blood to the lungs