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www.reference.com/article/difference-between-arterial-venous-blood-cc785bf661cba8f0

In the strictest sense, blood that is being carried toward the heart is venous, while blood being carried away from the heart is arterial, according to Dictionary.com. However, with the exception of the blood carried by the pulmonary arteries and veins, blood in the art...

www.reference.com/article/difference-between-arterial-venous-bleeding-bd37e0d0cc4dea9a

The main difference between arterial and venous bleeding is the point of origin. UCSB ScienceLine explains that arterial bleeding originates from the damaged arteries while venous bleeding means losing the blood from the veins.

www.reference.com/article/co2-mean-cd8a14af458e6869

CO2 is the molecular formula for carbon dioxide. Each molecule of carbon dioxide has one atom of carbon and two atoms of oxygen. Animals expel carbon dioxide when they breathe.

www.reference.com/article/cause-low-co2-blood-220e9c8be9f252cc

Addison's disease, lactic acidosis, kidney disease, diarrhea and ethylene glycol poisoning are causes of low CO2 blood levels, according to MedlinePlus. Seizures, cancer, diabetic ketoacidosis and hyperventilation are also causes, claims Healthline.

www.reference.com/article/normal-levels-co2-blood-44e6f1f10d52854c

The normal range of carbon dioxide levels in the blood is 23 to 29 milliequivalents per liter, according to MedlinePlus. Sometimes other units might be used, in which case the normal range is 23 to 30 millimoles per liter, reports WebMD.

www.reference.com/article/co2-level-blood-mean-8370b973305690fa

Abnormal CO2 levels in the blood may mean that a patient is losing or retaining fluid, according to MedlinePlus. This may imbalance the patient's electrolytes, which are minerals in the body fluids that carry electric charges and help regulate metabolism.

www.reference.com/article/healthy-respiratory-co2-levels-a91ba8e56a1645c4

A blood pH level between 7.35 and 7.45 is a sign of healthy respiratory carbon dioxide levels, says Healthline. If the pH falls beneath this, the patient may be suffering from respiratory acidosis.