Mixing chemicals with waste in sewage holding tanks or septic. systems may produce toxic fumes, corrode pipelines and tanks, and. pollute soil and ground water when discharged. When chemicals, such as formaldehyde, are added to septic systems, they can cause. bacteria in the system to die.
The cervix is the opening to the womb. Itâs located between the vagina and the uterus and plays a crucial role in pregnancy and labor. During pregnancy, it remains closed and the opening is blocked with a mucus plug.
How short?: Short cervix only matters when it comes to pregnancy. If cervix is < than 2.5 cm long, there is increased risk of prematurity. Your OB can check for funneling of membranes into cervix early on, and after 24wks, do a test called fetal fibronectin. If this is positive and you have short cervix, your risk of prematurity is much higher, and your doctor may want to implement steps to reduce risk. ...Read more.