Your baby's finally here, and you're thrilled â but you're also exhausted, uncomfortable, on an emotional roller coaster, and wondering whether you'll ever fit into your jeans again. Childbirth classes helped prepare you for giving birth, but you weren't prepared for all of this!
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.
a ridgelike structure. carina traÂ´cheae a downward and backward projection of the lowest tracheal cartilage, forming a ridge between the openings of the right and left principal bronchi. carina urethraÂ´lis vagiÂ´nae the column of rugae in the lower anterior wall of the vagina, immediately below the urethra.