1. What is one role of the lungs?
Allow for gas exhange so carbon dioxide can enter the bloodstream
Cooling the heart
Allow for gas exchange so oxygen can enter the bloodstream
Host bacteria that can cause bronchitius
2. Which is NOT a function of the heart?
be vunerable to heart attacks
pump blood to the lungs(no Obvi)
pump blood to the body(no Obvi right?)
recieve signals to regulate heart rate (I think this one)
3. Which of the following is true?
arteries always carry deoxyenated blood
veins carry blood towards the heart
the only thing blood carries is oxygen
arteries carry blood towards the heart
4. Why dont single celled organisms need lungs?
they do not need to exchange gases with their environment
they are small enough that gas exchange can occur without lungs
single celled organisms do not respire
lungs are too cool for school (No Obvi)