Breast Milk: Nutrients, Defense Cells, Formation

How is breast milk produced? The production and release (secretion) of breast milk is called lactation. This task is performed by the mammary glands. The hormones estrogen, progesterone, human placental lactogen (HPL) and prolactin prepare the breast for breastfeeding already during pregnancy. However, milk production does not kick in until after birth, when the shedding … Breast Milk: Nutrients, Defense Cells, Formation

Human Blood Circulation

The circulatory system reaches into almost every corner of the body to supply cells with oxygen and nutrients. Find out here why bottlenecks sometimes occur and what helps blood circulation get going. For humans, the circulatory system is both a supply and disposal system: it transports oxygen and nutrients to the tissues and organs and … Human Blood Circulation