ANATOMY

GENERAL ANATOMY

CARDIOVASCULAR SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the role of veins in the cardiovascular system?
A
Carry blood away from the heart
B
Carry blood back to the heart
C
Carry blood to the lungs
D
Allows the exchanges of gases, nutrients and wastes between blood and the tissues
Explanation: 

Detailed explanation-1: -Veins bring blood to the right side of your heart. Pulmonary arteries carry the blood to your lungs, where it receives oxygen. Pulmonary veins move the blood oxygen-rich blood to the left side of your heart.

Detailed explanation-2: -Arteries carry blood away from the heart and veins carry blood back to the heart. The circulatory system carries oxygen, nutrients, and hormones to cells, and removes waste products, like carbon dioxide.

Detailed explanation-3: -As blood travels through the body, oxygen is used up, and the blood becomes oxygen poor. Oxygen-poor blood returns from the body to the heart through the superior vena cava (SVC) and inferior vena cava (IVC), the two main veins that bring blood back to the heart.

Detailed explanation-4: -The superior vena cava is the large vein that brings blood from the head and arms to the heart, and the inferior vena cava brings blood from the abdomen and legs into the heart.

Detailed explanation-5: -Pulmonary artery is the only artery that carries carbon dioxide rich blood to lungs for re-oxygenation.

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