<prompt> All of the following are true about regional blood flow in pregnancy except :Uterine blood flow at term is 750 mlminBlood flow through skin decreasesRenal blood flow increases by 50Pulmonary blood flow increase  <response>: REGIONAL DISTRIBUTION OF BLOOD FLOW: Uterine blood flow is increased from 50 mLmin in non-pregnant state to about 750 mL near term. The increase is due to the combined effect of uteroplacental and fetoplacental vasodilatation. The vasodilatation is due to the smooth muscle relaxing effects of progesterone, estrogen, nitric oxide endothelium derived factor, prostaglandins and atrial natriuretic peptide ANP. In a normal pregnancy, vascular system becomes refractory to angiotensin II, endothelin I and other pressure agents. Pulmonary blood flow normal 6000 mLmin is increased by 2500 mLmin. Renal blood flow normal 800 mL increases by 400 mLmin at 16th week and remains at this level till term. The blood flow through the skin and mucous membranes reaches a maximum of 500 mLmin by 36th week. Heat sensation, sweating or stuffy nose in pregnant woman is thus explained. Reference: Duttas Textbook of Obstetrics 7th edition page no 54 