What are trabeculae carneae?

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Multiple Choice

What are trabeculae carneae?

Explanation:
Trabeculae carneae are large, irregular muscular ridges lining the inside of the ventricular walls. They are formed by bundles of cardiac muscle fibers and are not valves or structures of the atria. Some of these ridges extend as papillary muscles that anchor the chordae tendineae of the AV valves, helping prevent valve prolapse during contraction. The left atrium has its own muscular ridges (pectinate muscles), and the SA node is a specialized conduction tissue, not a trabeculated ventricular ridge.

Trabeculae carneae are large, irregular muscular ridges lining the inside of the ventricular walls. They are formed by bundles of cardiac muscle fibers and are not valves or structures of the atria. Some of these ridges extend as papillary muscles that anchor the chordae tendineae of the AV valves, helping prevent valve prolapse during contraction. The left atrium has its own muscular ridges (pectinate muscles), and the SA node is a specialized conduction tissue, not a trabeculated ventricular ridge.

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