Respiratory and Circulatory System

What is the main function of the respiratory system?

• to break food down

• supply the blood with oxygen

• circulate the blood

• controlling the body

Which part of the body is not used for the respiratory system to work?

• mouth

• nose

• small intestine

• diaphragm

What is the diaphragm's main function?

• pump blood into the lungs

• pump carbon dioxide out of the lungs and pull oxygen into the lungs

• pump oxygen out of the lungs and pull carbon dioxide into the lungs

• pumping blood

Inside each of your lungs there are tubes called bronchi. These branch into even smaller tubes much like the branches of a tree. What are at the ends of these tubes?

• alveoli

• diaphragms

• cells

• lobus

What is responsible for picking up the oxygen in lungs and carrying it to all the body cells that need it?

• red blood cells

• white blood cells

• veins

• ventricle

What is the organ labelled as A?

• diaphragm

• bronchus

• trachea

• alveoli

What is the main function of the alveoli?

• airway tubes that branch off the trachea and enter the lungs

• the windpipe that connects the mouth and nose to the lungs

• a muscle below the lungs responsible for inhalation and exhalation

• part of an organ that is responsible for gas exchange

What is the main function of the diaphragm?

• It is the airway tubes that branch off the trachea and enter the lungs.

• It is the windpipe that connects the mouth and nose to the lungs.

• It is a muscle below the lungs responsible for inhalation and exhalation.

• It is the organ responsible for gas exchange.

During _____, the diaphragm and intercostal muscles relax.

• inhalation

• digestion

• exhalation

• expiration

During _____, the diaphragm and intercostal muscles contract.

• exhalation

• inhalation

• digestion

• expiration