Newborn baby’s immune system is not developed completely yet. He receives some specific immune factors from his mother’s organism, because your little one’s organism is not ready to give a specific response to an infection. The non – specific immune protection is executed by cell and humor factors. Immunoglobulin A, immunoglobulin M and immunoglobulin G refer to the humor factors. A fetus receives immunoglobulin G from his mother, and during first several weeks of his life baby’s immunoglobulin G level becomes the same as his mother’s. Standard immunoglobulin A and immunoglobulin M levels are low. Immunoglobulin A gets into baby’s bowels along with his mother’s milk. Colostrum is especially rich in immunoglobulin A. Baby’s bowels begin to produce his own immunoglobulin A by the end of the first month of a child’s life.
Immunoglobulin M is produced beginning with the 2nd – 3rd weeks of baby’s life. Mother’s immunoglobulin get gradually ruined beginning with the first month and this process is finished completely by the 6th month.
Parathyroid glands function as well and they take part in the calcium exchange. Thymus gland is relatively big, it weights about 0, 41 ounces. Adrenal glands’ mass is up to 0, 43 ounces, their anatomic structure and functioning are not developed completely yet, but they take an active part in the adaptation reactions of a newborn baby’s organism. Baby’s pituitary gland is well developed, it weights 0, 004 – 0, 005 ounces; each of the above mentioned glands secretes specific hormones.