Gas Exhange Flashcards Preview

A Level P.E (A&P) > Gas Exhange > Flashcards

Flashcards in Gas Exhange Deck (7)
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1
Q

What are the 3 different ways carbon dioxide is transported in the body?

A
  • Dissolved in water
  • Carried with haemoglobin to form carbaminohaemoglobin
  • dissolved in blood plasma
2
Q

What is the inspiration process at rest?

A
  • Diaphragm moves down
  • external intercostal contract and move the ribs outwards
  • this increases the volume of the thoracic cavity
3
Q

What is the inspiration process during exercise?

A
  • abdominal contract to pull the diaphragm down
  • external intercostals contract
  • pectorals contract to pull the ribs outwards
  • sternocloidomastioid contracts to pull the ribs upwards
4
Q

How thick are the walls of the alveoli? And why?

A

They are only 1 cell thick to allow for quick gaseous exchange

5
Q

How many oxygen molecules can each haemoglobin molecule attach to?

A

Up to 4, but usually less when at rest as less oxygen is needed around the body

6
Q

Oxygen and haemoglobin together is called…

A

Oxyhemoglobin

7
Q

Carbon dioxide and haemoglobin together is called…

A

Carbominohaemoglobin