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may be those of oesophagus or vulva not quite sure !
The answer to that is varicose veins.
You squeeze your muscles of your lower abdomen really hard so it forces the baby through the birth canal. Once you are 10cm dilated, you push with each contraction so the baby is born.
The opposite of dilated pupils is constricted pupils.
Dilated means made wider of larger, so 50% dilated is 50% larger
When after contraction of ventricles of heart, blood is propelled into circulatory system (both systemic and pulmonary circulation) and that pressure is called systolic pressure, witch dilates the aorta and large(and small also) arteries. When ventricles relax in diastole aortic (and pulmonary) valves close down and then aorta and large (and small also)arteries contract, witch are dilated during systole. Peripheral resistance in closed system maintain the lower blood pressure called diastolic blood pressure.
What happens when psychedelically system is not dilated
Dilated - 2010 was released on: USA: May 2010
Dilated pupils are bigger, and constrictred pupils are smaller.
When the pupils become large, the term for this is dilated pupils. (Some people just say "dilated eyes", although this isn't a precise way to conceptualize it.)
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you can be dilated for months before you actually go into labor.