The information here should only be a guideline. Your doctor may provide you with other advise and your baby may have ideas of her own.For the first four to six months of your baby's first year all she will need is breast milk or formula. During this time she should start to be introduced to solids when she is ready.
The small intestine is the 'work horse' of digestion, as this is where most nutrients are absorbed. Peristalsis is also at work in this organ, moving food through and mixing it up with the digestive secretions from the pancreas and liver, including bile.ood is pushed through the esophagus and into the stomach by means of a series of contractions called peristalsis. Just before the opening to the stomach is an important ring-shaped muscle called the lower esophageal sphincter (LES).
Pathway of Blood through the Pulmonary and Systemic Circuits. Humans have a closed circulatory system, meaning that blood is confined within the chambers of the heart and blood vessels. The blood is pumped by the muscular heart and continuously flows through arteries, arterioles, capillaries, venules, and veins. In humans, the right side of the heart pushes blood through the pulmonary circuit so that it can be oxygenated in the lungs. The left side of the heart pumps oxygenated blood to the entire body via the systemic circuit. Click on the buttons to review the pathway of blood flow in the pulmonary and systemic circuits.