3.1.4 Gas Exchange 2

What adaptation do ALVEOLI have to allow for efficient gas exchange?

• thick walls (more than one cell thick)

• thin walls (one cell thick)

• low surface area for gas exchange

• high surface area for gas exchange

What can be found wrapped around alveoli?

• pulmonary capillaries

• pleura

• lymphatic nodes

• saliva

Tags

NGSS.HS-LS2-5

During gas exchange, what moves from ALVEOLI to PULMONARY CAPILLARIES?

• CO₂

• CO

• O₂

• N₂

The movement by diffusion of oxygen and carbon dioxide across a membrane (any membrane).

• Ventilation
• Breathing
• Gas exchange
• Respiration

Why does carbon dioxide move from X to Y in the diagram?

• The air in the alveoli has a lower concentration of CO₂ than the blood

• CO₂ moves more freely in air than the blood

• Carbon dioxide must replace oxygen lost

• Diffusion of CO₂ can only go out of the blood

Tags

NGSS.HS-LS2-5