Gas Exchange Flashcards
Why do we have ribs
Protect our lungs and heart and help in the process of breathing
Why do we have intercostal muscles
Move the ribs up and out when breathing in
What is gas exchange
Involves the exchange of oxygen and carbon dioxide
What is gas exchange
Involves the exchange of oxygen and carbon dioxide
Where does gas exchange take place
Alveolus
Where does respiration occur
All living cells
What is respiration
A series of chemical reactions that releases energy
What is diffusion
Is the movement of a substance from an area of high to low concentration
Oxygen and carbon dioxide move in the directions they do as a result of diffusion
Oxygen and carbon dioxide move in the directions they do as a result of diffusion
What is the function of many folded alveoli
Increases surface area
What is the function of good blood supply i.e close to a blood capillary
High diffusion gradient
What is the function of only one thick cell in the alveolus
Short diffusion distance
What is the function of the alveolus being permeable (having small holes)
Easy to for gases to diffuse
What is the function of the alveolus being moist
Dissolved gases diffuse faster
