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.
The function of cristae is to expand the surface area of the mitochondria. The cristae are the inner foldings of membrane within the mitochondria. On the cristae, there are â¦ sites where cellular respiration occurs. Cellular respiration breaks down sugars into energy to be used in the cell.he cristae are the inner foldings of membrane within the mitochondria. On the cristae, there are â¦ sites where cellular respiration occurs. Cellular respiration breaks down sugars into energy to be used in the cell.