The Danube connects with the RhineâMainâDanube Canal at Kelheim, with the Donaukanal in Vienna, and with the DanubeâBlack Sea Canal at CernavodÄ. Apart from a couple of secondary navigable branches, the only major navigable rivers linked to the Danube are the Drava, Sava and Tisa.In Serbia, a canal network also connects to the river; the network, known as the DanubeâTisaâDanube Canals, links sections downstream.he Danube (/ËdaenjuËb/ ËDÃ¦NJUËB-dan, ewb also known by other) names Is 'europe s-second longest, river After volga, river and also the longest river in The European union, region located In central And Eastern. europe
The cells that make up the placenta, known as trophoblasts, are able to convert cholesterol from the motherâs bloodstream into progesterone. Between weeks 6-9 of pregnancy, the placenta takes over from the ovariesas the main producer of progesterone.
The placenta is a structure that develops in the uterus during pregnancy to nourish the growing baby. If the placenta peels away from the inner wall of the uterus before delivery â either partially or completely â it's known as placental abruption. Placental abruption can deprive the baby of oxygen and nutrients and cause heavy bleeding in the mother. Placental abruption often happens suddenly. Left untreated, placental abruption puts both mother and baby in jeopardy. 1  Symptoms.