12L3 Respiratory System Gas Transport

Why does the body need Oxygen?

• to stay hydrated

• to make glucose in photosynthesis

• to stay awake in class

• to make ATP energy in cellular respiration

Which of the following is the correct order of O₂ movement?

• heart --> lungs --> mouth --> body cells

• mouth --> heart --> body cells --> lungs

• mouth --> lungs --> heart --> body cells

• lungs --> heart --> body cells --> mouth

What is a waste product of cellular respiration?

• ATP

• O₂

• CO₂

• Glucose

Which two systems work together to bring O₂ into the body and CO₂ out of the body?

• circulatory and digestive

• respiratory and circulatory

• digestive and integumentary

• respiratory and integumentary

Where does Oxygen go after it enters the lungs?

• it moves to the mouth through exhalation

• it stays in the lungs

• it moves to the bloodstream through diffusion

• it moves to the body cells through diffusion

Without the respiratory system, body cells would not receive Oxygen from the air. How would an organism make energy in the cells?

• cells would make lungs to get O₂ to make ATP

• cells would not change, they can still get O₂ from the bloodstream

• cells would not make energy without O₂

• cells would do anaerobic respiration to make ATP without O₂

Where does Oxygen go after it enters the lungs?

• it moves to the mouth through exhalation

• it stays in the lungs

• it moves to the bloodstream through diffusion

• it moves to the body cells through diffusion

Inspiration involves the movement of ___ rich air into the lungs. Expiration involves the movement of ___ rich air out of the lungs.

• O2, CO

• CO2, O2

• O2, CO2

• CO, O

Where does gas exchange occur in humans?

• Gills

• Alveoli

• Bronchioles

• Trachea

What system is responsible for transporting oxygen to all of the other body systems?

• Respiratory

• Circulatory

• Nervous

• Endocrine