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.
You can assume your baby is getting about 3 ounces per feeding. Breastfed babies drink somewhere between 25 ounces and 30 ounces per day. Take into account that every baby is different and what you are able to pump does not necessarily indicate how much milk you actually have.The pumping process is completely different than the act of a child nursing at the breast.y the time your baby is 6 weeks old, he or she should be fed 4 to 5 ounces of formula, 6 to 8 times per day. If you multiply your baby's weight by 2.5, you will get a rough estimate of how many ounces he or she needs per day.