| A | B |
| lactation | the secretion or formation of milk. |
| colostrum | a yellowish liquid, especially rich in immune factors, secreted by the mammary gland of female mammals a few days before and after the birth of their young. |
| Oxytocin | a polypeptide hormone, produced by the posterior lobe of the pituitary gland, that stimulates contraction of the smooth muscle of the uterus. |
| swallowing reflex | Swallowing caused by stimulation of the palate, |
| mammary gland | milk-producing lobes with ducts that empty into an external nipple, becoming functional when young are born and secreting milk for the duration of suckling. |
| areola | a ring of color, as around the human nipple. |
| letdown reflex | THe reflex that happens a few days to weeks after birth and breastfeeding initiation;it may be a tingling or warm sensation that happens about 2 minutes after breastfeeding has initiated and allows the breast milk to more freely flow from the milk ducts. |
| rooting reflex | A reflex in infants in which rubbing or scratching about the mouth causes the infant to turn its head toward the stimulus. |
| meconium | the first fecal excretion of a newborn child, composed chiefly of bile, mucus, and epithelial cells. |
| suckle | to nurse at the breast |
| probiotics | a usually dairy food or a dietary supplement containing live bacteria that replace or add to the beneficial bacteria normally present in the gastrointestinal tract. |
| LaLeche League | an international nonprofit organization that distributes information on and promotes breastfeeding |