Respiratory & Digestive System

What is the function of the respiratory system?

• To extract energy from food

• To breakdown food using oxygen

• To allow the exchange of gases between the air and the body

• To circulate blood throughout the body

Which structure controls breathing?

• Trachea

• Diaphragm

• Epiglottis

• Bronchi

Where does gas exchange actually take place in the lungs?

• Trachea

• Bronchi

• Bronchioles

• Alveoli

By what process do carbon dioxide and oxygen move into and out of the

alveoli and blood?

• By pumps that connect alveoli to capillaries

• By the passive process of diffusion

• By an active, energy-consuming process

• Through tiny pores that connect alveoli to capillaries

Which statement best describes how and why oxygen moves into or out of

alveoli?

• Oxygen moves from inside alveoli into the blood because the

  concentration of oxygen is higher inside the alveoli

• Oxygen moves from inside alveoli into the blood because the

  concentration of oxygen is lower inside the alveoli

• Oxygen moves from the blood to inside the alveoli because the

  concentration of oxygen is higher in the blood

• Oxygen moves from the blood to inside the alveoli because the

  concentration of oxygen is lower in the blood

How would you describe the blood carried by capillaries to alveoli?

• It is oxygen-poor (deoxygenated) and carbon dioxide-rich

• It is oxygen-rich (oxygenated) and carbon dioxide-rich

• It is oxygen-poor (deoxygenated) and carbon dioxide-poor

• It is oxygen-rich (oxygenated) and carbon dioxide-poor

Tags

NGSS.HS-LS1-7

What can you infer about the function of the ribcage?

• It protects the lungs

• It helps the lungs pump oxygen

• It delivers oxygen from the lungs to the bloodstream.

• It connects the trachea to the lungs.

What word best describes the function of the trachea?

• Pumping station

• Entrance points

• Muscle

• Passageway

The walls of the alveoli and capillaries are permeable. What does this mean?

• Substances can pass through them.

• They are made of muscle.

• They are located throughout the body.

• They are made of bone.

Tags

NGSS.HS-LS2-3

What happens when your diaphragm relaxes and moves upward?

• Your bloodstream transfers carbon dioxide to your alveoli.

• Your alveoli transfer oxygen to your bloodstream.

• Your lungs inflate and you breathe in.

• Your lungs deflate and you breathe out.