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 (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.
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.