Flashcards in Chapter 42: Circulation and Gas Exchange Deck (12)
How does gas exchange happen?
Particles go from high pressure to low pressure
Gas exchange is an uptake of ____ and a release of ____.
CO2 (carbon dioxide)
What do arteries do?
Carry blood away from the heart
What do veins do?
Carry blood towards the heart
What are capillaries and what do they do?
Vessels with thin porous walls
Lungs have sacs called _______.
What are erythrocytes?
Red blood cells
What do erythrocytes do?
Transport oxygen using hemoglobin
How many oxygen molecules (O2) does each hemoglobin protein hold?
Erythrocytes contain __________ of hemoglobin molecules
When an oxygen molecule is bound (attached) to hemoglobin it __________ its affinity (attraction) for oxygen.