They combine with a third system, the immune, to protect the body against pathogens that could threaten the organism's viability. The blood is responsible for the following: 1  Transportation of gases (oxygen O 2) and carbon dioxide (CO 2), chemical substances (hormones, nutrients, salts), and cells that defend the body.hey combine with a third system, the immune, to protect the body against pathogens that could threaten the organism's viability. The blood is responsible for the following: 1  Transportation of gases (oxygen O 2) and carbon dioxide (CO 2), chemical substances (hormones, nutrients, salts), and cells that defend the body.
Myo-inositol in Pregnancy Purpose of the study is to learn if myo-inositol supplements (supplement in the B-vitamin family) affect your blood sugar and how your body processes food for energy. The Maternal-Fetal Medicine Research Unit is studying myo-inositol supplementation in pregnancy.
Pregnancy Contractions. A pregnancy contraction is when the uterus, the muscular organ where your baby grows, hardens and makes your entire abdomen feel as if it is tight or taut. In between contractions, the uterus will relax and everything in the abdomen will feel soft again.