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The trabeculae carneae are muscular, columnar protrusions found on the internal surface of the ventricles, the main pumping chambers of the heart. It is thought that they help prevent suction that would occur with a smooth surface.he trabeculae carneae are muscular, columnar protrusions found on the internal surface of the ventricles, the main pumping chambers of the heart. It is thought that they help prevent suction that would occur with a smooth surface.
Best Answer: The papillary muscles are attached to the chordae tendineae (which attach to the tricuspid or mitral valve, preventing back flow during ventricular contraction) unlike the trabeculae carneae. Trabeculae carneae are attached at either end (forming a bridge) or along their whole length.Papillary muscles and only attached to the ventricular wall at one end, the other is connected to the chordae tendineae.est Answer: The papillary muscles are attached to the chordae tendineae (which attach to the tricuspid or mitral valve, preventing back flow during ventricular contraction) unlike the trabeculae carneae. Trabeculae carneae are attached at either end (forming a bridge) or along their whole length.