can someone help me please?, what is the journey made by an oxygen atom through the body?

Question

i really need help with this, if someone helped me i'd be so so so so so grateful
xxx

for my science homeowrk, i really need help, i would be so so so so so so grateful!
thank you xxxx

GLH, what do you mean?

oh thank you!!!!!!!!!!!!!!!!

I LOVE YOU GUYS!

Answer 1

In simple terms:-
+ Enters into the lungs as gaseous oxygen (O2) as we inhale
+ Absorbed by the haemoglobin in the red blood cells to form oxy-haemoglobin
+ carried to the heart in the pulmonary vein
+ pumped out of the heart via the Aorta to the body
+ the Aorta divides into smaller and smaller arteries until they become capillaries
+ In the capillaries the oxygen is released into respiring cells
+ In the cell the oxygen is used in respiration to convert glucose to energy and in the process water (H2O) carbon dioxide (CO2) is formed
+ Our oxygen atom has now become part of the CO2
+ The CO2 returns to the blood stream in the capillaries
+ It is transported back to the heart via the veins leading to the main vein, the Vena Cava
+ from the heart it is pumped to the lungs along the pulmonary artery
+ In the lungs the CO2 is released back into the air as we exhale

If you want to know exactly how the oxygen gets bonded to carbon in the respiration of glucose look up "Krebs Cycle" on somewhere like Google

Answer 2

I'm no expert on this but have a basic understanding of how it works.

First the oxygen enters the lungs where it contacts blood vessels in the lungs. Oxygen is bound to iron in the blood (thats why red color). The oxygen is transported by the blood to individual cells where it is used combined with, fats, carbs which are oxidized and produce carbon di-oxide (contains oxygen combined with carbon). The carbon di-oxide also binds to the iron in the blood and is transported to the lungs where it is exhaled as CO2.

Carbon di-oxide does not bind to the iron as tightly as pure oxygen so at the lungs the CO2 is traded for O2.

This is why Carbon monoxide is so dangerous. Because it does bind to the iron in the blood almost as strongly as Oxygen and interferes with the transport of oxygen throughout the body.

Answer 3

Wiki is good for lots of homework, bookmark them
and here is some stuff on the oxygen

http://en.wikipedia.org/wiki/Systemic_circulation

Answer 4

i think they have it set for you. listen to them. im pritty good at science and the first person has it pritty much covered.

Answer 5

you said it