1.1 The Respiratory System

Which activity is a function of the respiratory system?

• taking oxygen into the body

• digesting nutrients from food

• carrying out cellular respiration

• removing liquids from the body

Between which two systems does gas exchange takes place?

• Gas exchange takes place between the respiratory and digestive systems.

• Gas exchange takes place between the circulatory and excretory systems.

• Gas exchange takes place between the respiratory and circulatory systems.

• Gas exchange takes place between the circulatory and nervous systems.

How does the diaphragm help move air into and out of the chest?

• The diaphragm helps move air into and out of the chest by changing the air pressure inside the chest.

• The diaphragm helps make the lungs stronger so they can move air into and out of the chest.

• The diaphragm works with the stomach to pull in air the same way we use a straw to pull in liquids.

• The diaphragm helps move air into and out of the chest by sending messages to the brain when the body needs oxygen.

Which is another name for the voice box?

• pharynx

• larynx

• trachea

• alveoli

Which organ at the top of throat stops food and water from entering the lungs?

• The pharynx.

• The larynx.

• The bronchi.

• The alveoli.

Which answer is the best reason that the trachea is called the "windpipe?"

• Food and water enters the lungs through the trachea.

• All animals can make the sounds of the wind if they have a trachea.

• Air from our throats passes through the trachea into the bronchi and our lungs.

• The word trachea comes from the ancient Greek word trakheia, which means "wind."

In which organ does gas exchange occur?

• The larynx.

• The diaphragm.

• The trachea.

• The alveoli.

Which of the following best describes exhalation?

• During exhalation, the diaphragm contracts and moves down.

• During exhalation, the diaphragm relaxes and moves up.

• During exhalation, the lungs contract and move down.

• During exhalation, the lungs relax and move up.