Please check my answer thansks :)

Invasive sampling of the blood from the _______ would reval that the blood is mostly dexygenated

My answer is pulmonary arteries

I think that "veins" would be a better answer.

I hope this helps. Thanks for asking.

To check if your answer is correct, let's go through the process of narrowing down the options and finding the correct answer.

Invasive sampling of blood means taking a sample directly from a blood vessel. We are looking for a location where the blood is mostly deoxygenated, meaning it has low oxygen levels.

The first option you provided is the pulmonary arteries. Now let's think about the function of the pulmonary arteries. These arteries carry blood from the heart to the lungs, where it picks up oxygen. In the lungs, the blood becomes oxygenated and is then transported back to the heart through the pulmonary veins.

Since the blood in the pulmonary arteries is on its way to the lungs to be oxygenated, it would not be mostly deoxygenated. Therefore, your answer of pulmonary arteries is incorrect.

To find the correct answer, we need to identify a location where the blood is mostly deoxygenated. One such location is the veins that are carrying blood back to the heart from the body tissues. The deoxygenated blood returns to the heart, typically through the superior and inferior vena cava, and is then pumped to the lungs for oxygenation.

So, the correct answer is veins returning blood to the heart (e.g., systemic veins, superior vena cava, or inferior vena cava).