The vagus nerve and the heart. Fibres of the vagus nerve (right/bottom of image) innervate the sinoatrial node tissue (central and left of. image). H&E stain. Parasympathetic innervation of the heart is mediated by the vagus. nerve. Specifically, the vagus nerve acts to lower the heart rate.
1 An 8-pound newborn drinks about 2 ounces at a time, roughly 10 times a day. 2  A 14-pound 4-month-old drinks 4 to 5 ounces at a time about six to eight times a day.  A 16-pound 6-month-old drinks 5 to 6 ounces at a time, roughly five times a day, in addition to eating some baby food.
At 6 months, Baby will consume about 6-8 ounces of formula or breast milk at each feeding. This is in addition to cereal and other baby foods. Again, Baby will signal to you when he is full. Your baby should never eat more than 32 ounces of milk in a 24-hour period. If he seems to have an insatiable appetite or doesn't seem to be eating enough, contact your pediatrician.