gas exchange - (Mar/21/2006 )
hello, i have to aswer this question and i dont know if is a tricky question, because i find all of them incorrect except the last one, maybe some one here can give me an opinion or agree please:
Regarding gas exchange in the body which statement is FALSE:
a) pulmonary arteries contain oxygenated blood
the right atrium and right ventricle contain oxygenated blood
c) the ph of blood fluxuates between highky acidic and highly basic
d) pulmonary veins pass carbon dioxide-rich blood to the left side of the heart
e) the left atrium and the left ventricle contain oxygenated blood
The pulmonary arteries carry blood from the heart to the lungs. They are the only arteries (other than umbilical arteries in the fetus) that carry deoxygenated blood.
The right ventricle is one of four chambers (two atria and two ventricles) in the human heart. It receives de-oxygenated blood from the right atrium via the tricuspid valve, and pumps it into the pulmonary artery via the pulmonary valve.
The normal pH of human arterial blood is approximately 7.40 (normal range is 7.35-7.45). Blood that has a pH below 7.35 is acidic, while blood pH above 7.45 is alkaline. Blood pH along with paCO2 and HCO3 readings are helpful in determining the acid-base balance of the body.
The function of the right side of the heart (see right heart) is to collect deoxygenated blood from the body and pump it into the lungs so that carbon dioxide can be dropped off and oxygen picked up. this happens through a process called diffusion. The left side (see left heart) collects oxygenated blood from the lungs and pumps it out to the body. On both sides, the lower ventricles are thicker than the upper atria.
The left atrium is one of four chambers (two atria and two ventricles) in the human heart. It receives oxygenated blood from the pulmonary veins, and pumps it into the left ventricle.
It's not a trick question. Though they always put one in.
Vetticus
thank you very much, with that information i know now a) is the wrong one