Question

The two upper chambers of the heart are called:

• A. Ventricles
• B. Capillaries
• C. Vena Cava
• D. Atria

Hint:

Heart chambers: upper = atria, lower = ventricles

Answer 1

The Correct Option is D

The human heart is a vital organ responsible for pumping blood throughout the body. It is divided into four chambers:

\[ \text{Heart Chambers} = 2 \text{ Upper Chambers} + 2 \text{ Lower Chambers} \]
Upper Chambers:
The two upper chambers are called Atria (singular: Atrium).
 

• Right Atrium – receives deoxygenated blood from the body.
• Left Atrium – receives oxygenated blood from the lungs.

Lower Chambers:
The two lower chambers are called Ventricles.
 

• Right Ventricle – pumps blood to the lungs.
• Left Ventricle – pumps blood to the entire body.

Explanation of Other Options:
 

• Ventricles: These are lower chambers, not upper.
• Capillaries: These are tiny blood vessels, not heart chambers.
• Vena Cava: This is a large vein that brings blood to the heart.

Conclusion:
Therefore, the two upper chambers of the heart are called Atria. 

\[ \boxed{\text{Answer: Atria}} \]