In regard to blood circulation, if you begin with oxygen-poor blood that reaches the heart from the body and is pumped through arteries to capillaries of the lungs, then determine the order for the following: 1. In capillaries of the body, nutrients and oxygen move from the blood to body tissues.
2) Oxygen-rich blood returns to the heart from the lungs by veins.
3) In capillaries of the lungs, oxygen from inhaled air is picked up by the blood and carbon dioxide is released into the lungs and exhaled.
4) Oxygen-rich blood is pumped out of the heart into arteries leading to the body.
A) 1 → 3 → 4 → 2
B) 4 → 2 → 1 → 3
C) 3 → 2 → 4 → 1
D) 2 → 3 → 1 → 4

Question

Quizplus · Accepted Answer

The correct sequence starts with oxygen-poor blood reaching the lungs where it picks up oxygen (3), then the oxygen-rich blood returns to the heart via veins (2), next, the heart pumps this oxygen-rich blood to the body through arteries (4), and finally, in the body's capillaries, nutrients and oxygen are delivered to tissues (1).

In Regard to Blood Circulation, If You Begin with Oxygen-Poor