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.
According to MedlinePlus, newborns should consume 16 to 24 ounces of breast milk or infant formula each day, infants ages 4 to 6 months old should consume 28 to 45 ounces of breast milk or formula every day, babies ages 6 to 8 months should drink breast milk or formula three to five times per day and babies ages 8 to 12 months old should drink ...