The right ventricle then pumps blood through the pulmonary artery into the lungs. 4. In the lungs, tiny blood vessels called capillaries absorb carbon diox-ide from the blood and replace it with oxygen. 5. Oxygenated blood then flows through the pulmonary vein and into the left atrium. 6.
It is this hormone progesterone that can affect your digestive system by delaying the transit time of food through the intestines and hence may lead to constipation before your period. Usually though, you should find that the period-related constipation eases with the start of menstruation.
Researchers have found especially strong correlations between chronic constipation and two chronic neurological diseases: Parkinsonâs disease and Lewy-body dementia (in which abnormal protein deposits called Lewy bodies build up in brain cells) (Idiaquez 2011; Postuma 2013; Weerkamp 2013).