Is it correct to say that veins carry blood with high concentrations of waste products and arterie carry blood

Question

Is it correct to say that veins carry blood with high concentrations of waste products and arteries carry blood with high concentration of nutrients? Explain

Answer 1

Arteries carry blood away from the heart, veins carry blood to the heart. And thats all I can remember right now.

Answer 2

Yes and no. Sorry, given the complexity of the body it is impossible to give a clear cut answer. First, remember that not all veins carry de-oxygenated blood and not all arteries carry oxygenated blood. The prime example would be the pulmonary arteries that carry de-oxygenated blood from the right ventricle to the lungs and the pulmonary veins that carry oxygenated blood from the lungs to the left atrium.

Next, you have to consider where nutrients come from. Think about sugar. Sugar is readily absorbed into the bloodstream though the mouth and the gut--if you have ever seen a diabetic whose blood sugar is low it is simply amazing how quickly they respond to something really sweet just sitting in their mouth. This sugar is absorbed through the mucus membranes and into the capillaries and then is carried into the veins. The venous system then carries this blood to the heart, where it is pumped to the rest of the blood.

Next, think about where waste products come from and where they are disposed of. Waste products are generated by the cells and transmitted to the blood stream via the capillaries, then to the veins, then to the heart and the arties carry the waste to the points of detoxification or excretion (the liver, the skin, the lungs, the gut, the kidneys, etc). Many substances will require multiple passes though this filtering system before all is detoxified or excreted. As an aside, you might want to look at the pharmacodynamics of rectally administered medications. These meds have a very rapid onset of action (less than IV/IO only because they must be absorbed) and are very potent as they by pass the first past hepatic filtering that meds administered by all other routes experience. Rectally administered meds are a godsend when you can't get an IV and the patient is seizing or grossly hypoglycemic, or in febrile patients who are unwilling or unable to take oral medications.

Back on track...you asked if it is correct to say that veins carry higher concentrations of waste products and arteries higher concentrations of nutrients. The answer is yes and no. It depends greatly upon where you are talking about in the body and what you are talking about. If a person were to drink a glass of orange juice about a minute later the concentration of sugar in the veins coming off of his gut would be higher than anywhere's else in his body (with all other things being normal/equal). By the same token, wastes from the entire body are collected by all of the veins and funneled into the arteries to be excreted/detoxified by the lungs and other organs. For one heart beat (literally) the blood sitting in the pulmonary arterial trunk, coming off of the right ventricle and just before it bifurcates in the right and left pulmonary arteries, will have a higher concentration of waste products than anywhere else in the body.

An excellent example of all of this is found in the new American Heart Association basic life support (CPR) guidelines, released at the end of last year. Previously, the recommendation was to immediately attempt defibrillation when an adult is found in cardiac arrest. The idea was the most adults collapse in ventricular fibrillation or ventricular tachycardia--the two rhythms that can be corrected via defibrillation. Defibirllation is when the heart is shocked with an electrical impulse, hopefully stunning the heart and clearing all electrical activity for a moment. This will normally produce asystole--a flatline on the EKG--and give the good pacemakers of the heart (such as the sino-atrial, SA, node) a chance to reset and take over. However, it has been recognized that if the person has been down, without CPR being performed, for more than a minute or two the stagnant blood sitting in the coronary circulation of the heart will not be able to provide the SA node and the rest of the myocardial tissues with enough oxygen and nutrients to restart after defibrillation. Therefore, the current recommendation is that, unless a victim of cardiac arrest is wittnessed to collapse and a defibrillator is immediately at hand, one minute of CPR should be performed before defibrillation (either with a manual defibrillator or an AED) is attempted. By providing CPR first, you will flush out the stagnant blood in the heart, in the coronary cirulation, with relatively fresh blood from the veins. Once that blood that was very low in oxygen and very high in wastes such as latic acid has been flushed out and replaced with better oxygenated blood containing less waste from the veins, the heart cells will be less irritable and will be more responsive to defibrillation. The American Heart Association is referring to this as "Priming the Pump." I know that this example is not the best; I am assuming that you are asking about physiology and not pathophysiology, but it illustrates the point that while the question you asked can be turned into a generally correct statement it would not be entirely accurate and would be a gross over generalization. I hope that this helps.

Answer 3

Veins: any blood vessels carrying blood to Heart, lungs and Major organs; good blood

Arteries: any blood vessels that carry blood away from Heart, Lungs and Major organs, bad blood

Answer 4

Arteries carry blood that's full of oxygen from the lungs, and veins are unoxygenated vessels that carry the blood back to the heart to get pumped to the lungs get refilled with oxygen, and that blood gets recycled through the arteries.

Answer 5

No, the purpose of arteries is to deliver oxygenated blood to the body and purpose of venous blood is to return deoxygenated blood to the lungs. Arterial and venous blood is circulated to and filtered by liver and kidneys - so I don't believe that there is a huge difference in waste products in veins vs. arteries.

Answer 6

veins are the vessles for carbon dioxide which is a waste product. arteries are clear and can only be affected if contaminated by a gass such a a smoker

Answer 7

purple cells die off very immediately as quickly as a individual expires, that lots i understand. i've got seen the place human beings have expired yet are stored on a ventilator/life help to assist keep the organs potential until the harvest team can get there to reap organs. i've got set up and issued blood for this objective; actually to maintain the organs potential until harvest. i think of it is risk-free to postulate that even although the donor is on life help, equipment is retaining the organs oxygenated, there continues to be catabolism and the by using things from that ought to finally develop. it particularly is probable why the organs would desire to be harvested immediately for use. i ought to work out the place the viability of purple cells would be of question and why they does not be used.