The Respiratory System Flashcards

1️⃣ Familiarise yourself with the flashcards:

  • Look through all the flashcards to see what’s on both sides.
  • Make sure you understand the information on each card. If something’s unclear, click the link to the revision notes at the bottom of the page for more details.

2️⃣ Test yourself:

  • Look at the question or prompt on each card and try to remember the answer before flipping it over.
  • Check the answer and make a note of any cards you find challenging and need to go over more.

3️⃣ Consistently Review and Practice:

  • Use spaced repetition: spend more time on the cards you struggle with and go over them more often.
  • Regularly review all the flashcards to help you better understand and retain the information over time.

Note: We may include questions that have multiple correct answers. It’s useful to remember specific examples to understand these concepts better.

What are the two gases exchanged in the respiratory system?

Oxygen and carbon dioxide.

What prevents the trachea from collapsing when we inhale?

Rings of cartilage in the trachea prevent it from collapsing.

What are the tiny air sacs in the lungs where gas exchange occurs called?


What happens to the diaphragm and intercostal muscles during inhalation?

They contract, causing the ribcage to move outwards and upwards, increasing the volume of the thorax.

What occurs during exhalation to the diaphragm and intercostal muscles?

They relax, causing the ribcage to move downwards and inwards, decreasing the volume of the thorax.

Why does air move into the lungs during inhalation?

Because the pressure in the lungs is lower than outside the body, air is drawn into the lungs to equalise the pressure.

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