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Oxygen rich blood returns from the lungs to the heart. Which 2 systems are most directly involved in this process.

Respiratory and circulatory
Excretory and digestive
Circulatory and excretory
Digestive and respiratory

Respuesta :

Answer:

Respiratory and circulatory

Explanation:

The Circulatory System Works in Tandem with the Respiratory System. The circulatory and respiratory systems work together to sustain the body with oxygen and to remove carbon dioxide. Pulmonary circulation facilitates the process of external respiration: Deoxygenated blood flows into the lungs.

The two systems which are most directly involved in this process are respiratory and circulatory systems.

What do you mean by oxygen-rich blood?

In the lungs, oxygen is put into the blood, and carbon dioxide is taken out of the blood during the process of breathing. After the blood gets oxygen in the lungs, it is called oxygen-rich blood.

During the whole process of breathing, the respiratory and circulatory systems play a major role in the separation of oxygen-rich and oxygen-poor blood.

Therefore, the two systems which are most directly involved in this process are the the respiratory and the circulatory systems.

To learn more about the  Breathing process, refer to the link:

https://brainly.com/question/11569643