The answer is endocrine system. It includes all of the glands of the body and the hormones produced by those glands. The glands are controlled directly by stimulus from the nervous system as well as by chemical receptors in the blood and hormones produced by other glands. By regulating the roles of the organs in the body, these glands help to continue the body’s homeostasis. Cellular metabolism, reproduction, sexual development, sugar and mineral homeostasis, heart rate, and digestion are amid the several processes controlled by the actions of hormones.
the baby is not theirs because the father has a blood type of OB so he can give an O or a B and the mother has a blood type AB so she can give either an A or a B so their child could either be of blood type A or B or AB but not O
