The following are health and medical definitions of terms that appear in the Lung Cancer article. Abdomen: The belly, that part of the body that contains all of the structures between the... See the entire definition of Abdomen. Abdominal: Relating to the abdomen, the belly, that part of the body that contains all of ...
Head and neck muscles are the first to come under a baby's control. Muscle control moves downward, toward the feet. Babies typically roll from tummy to back first beginning at around 4 months of age and then back to tummy around 6 months of age, according to the A.I. DuPont Hospital for Children.
Once baby can lift her head while on her stomach, she's almost ready to roll. By her fifth month, your little one will use her arms to push off, and with some effort she'll start to roll from her stomach to her side. Tummy-to-side rolling is common for babies because they can use their arms and legs to gain momentum.