Asked by Mekhi Hawkins on Sep 25, 2024
Verified
What is the function of the auricles?
A) They are the upper chambers of the heart.
B) They supply oxygen-rich blood to the walls of the heart.
C) They are the lower chambers of the heart, which pump blood to the systemic and pulmonary circuits.
D) They form the serous membrane around the heart.
E) They allow the atria to expand while they are filling with blood.
Auricles
Auricles, in anatomy, primarily refer to the external part of the ear; however, they can also denote ear-like extensions or appendages in other organs, such as the atria of the heart.
Serous Membrane
A smooth tissue membrane consisting of two layers of mesothelium, which secrete serous fluid to lubricate and reduce friction between tissue layers.
- Understand the structure and roles of the cardiac chambers and valves.
Verified Answer
ED
Eunice Dennis1 day ago
Final Answer :
E
Explanation :
The auricles are structures that are located at the top of the atria in the heart. One of their primary functions is to allow the atria to expand while they are filling with blood, which can increase the amount of blood that they are able to hold. Therefore, the best choice is E: "They allow the atria to expand while they are filling with blood."
Learning Objectives
- Understand the structure and roles of the cardiac chambers and valves.
Related questions
Blood Flowing Out of the Pulmonary Veins Flows into the ...
Ridges of Heart Muscle Located Within the Right Atrium and ...
The Visceral Pericardium Is the Same Layer as the Epicardium
The Fibrous Pericardium Surrounds the Visceral and Parietal Layers of ...
During the Cardiac Cycle, the Semilunar Valves Close During Ventricular ...