External or internal respiration

Exercise and reference answers

Categories

1. External
2. Internal

Questions

1. Answer

   External

   Question

   Happens in the alveoli

2. Answer

   Internal

   Question

   Happens in the tissues

3. Answer

   External

   Question

   Gas meets outside air

4. Answer

   Internal

   Question

   Serves the body cells

5. Answer

   External

   Question

   Across the lung membrane

6. Answer

   Internal

   Question

   At the capillary bed

Instructions

Pull each description towards the kind it fits.

Explanation