Question

What are the positions of auricles and ventricles in the heart ?

• A. Upper chambers are called ventricles and lower chambers are called auricles
• B. Upper chambers are called auricles and lower chambers are called ventricles
• C. Left chambers are called auricles and right chambers are called ventricles
• D. Left chambers are called ventricles and right chambers are called auricles

Answer 1

The Correct Option is B

To solve the problem, we need to identify the correct positions of the auricles (also known as atria) and ventricles in the heart.

1. Understanding the Structure of the Heart:
The human heart is divided into four chambers: two upper chambers and two lower chambers. The upper chambers are called auricles (or atria), and the lower chambers are called ventricles. This division is based on their anatomical position within the heart.

2. Function of Auricles (Atria):
The auricles (atria) are responsible for receiving blood from the body and lungs. They act as collecting chambers that pump blood into the ventricles below them.

3. Function of Ventricles:
The ventricles are responsible for pumping blood out of the heart. The right ventricle pumps deoxygenated blood to the lungs, while the left ventricle pumps oxygenated blood to the rest of the body.

4. Anatomical Positioning:
Based on their location, the upper chambers are the auricles (atria), and the **lower chambers** are the ventricles. This positioning is consistent across all mammals, including humans.

5. Correct Answer:
From the given options, the correct statement is that the upper chambers are called auricles, and the lower chambers are called ventricles.

Final Answer: (B) Upper chambers are called auricles and lower chambers are called ventricles