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The trabeculae carneae (columnae carneae, or meaty ridges), are rounded or irregular muscular columns which project from the inner surface of the right and left ventricles of the heart. These are different from the pectinate muscles, which are present in the right atrium and the atrial appendages of the heart.he trabeculae carneae (columnae carneae, or meaty ridges), are rounded or irregular muscular columns which project from the inner surface of the right and left ventricles of the heart. These are different from the pectinate muscles, which are present in the right atrium and the atrial appendages of the heart.
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.