The theory is considered  constructivist  , meaning that , unlike nativist theories ( which describe cognitive development as the unfolding of innate knowledge and abilities ) or empiricist theories ( which describe cognitive development as the gradual acquisition of knowledge through experience ) , it asserts that we construct our cognitive ...
Introduction. The population frequency of a bicuspid aortic valve is â0.9% to 1.36%, 1â3 with a 2:1 male:female ratio. It is likely that the presence of a bicuspid aortic valve has a genetic basis, with the pattern of transmission in some families suggesting an autosomal dominant pattern of inheritance.
Bicuspid aortic valve (BAV) disease is a defect that occurs during the formation of the aortic valve in the uterus. The aortic valve separates the left ventricle from the aorta and normally has three cusps, which open and close as the ventricle contracts and relaxes.In bicuspid aortic valve disease, the valve has two cusps.icuspid aortic valve disease is an abnormal formation of the aortic valve (the valve connecting the aorta to the heart).