A newborn is protected against certain digestive and respiratory infections by IgA received via the mother's
A)milk.
B)blood.
C)intestine.
D)placenta.

Question

Quizplus · Accepted Answer

IgA (immunoglobulin A) is a type of antibody that is present in high levels in breast milk. When a newborn consumes breast milk, the IgA antibodies help protect against infections in the digestive system and respiratory tract. This is one of the key benefits of breastfeeding. IgA is not passed through the placenta; other types of antibodies, such as IgG, are passed from the mother to the fetus through the placenta.

A Newborn Is Protected Against Certain Digestive and Respiratory Infections