What are the Muscular Ridges That are Found in the Atria

Question

What are the muscular ridges that are found in the atria of the heart?
A) Trabeculae carneae
B) Pectinate muscles
C) Chordae tendineae
D) All of the above are muscular ridges in the atria of the heart

Accepted Answer

Pectinate muscles are the muscular ridges found in the atria of the heart. Trabeculae carneae are found in the ventricles, and chordae tendineae are tendinous cords, not muscular ridges.