1 Drowning can occur in as little as 20 seconds. 2  Don't put your life at risk trying to save your child. 3  If you must enter the water to perform a rescue, bring a flotation device with you. 4  If your child is unconscious and not breathing, call 911 right away.
This vitamin plays an essential role in vision, particularly night vision, normal bone and tooth development, reproduction, and the health of skin and mucous membranes (the mucus-secreting layer that lines body regions such as the respiratory tract).
Vitamin A is essential for a variety of biologic processes, many of which are related to growth, cellular differentiation and interactions of cells with each other or with the extracelluar matrix.any studies have now demonstrated that vitamin A (retinoic acid) is an important determinant of cell growth and differentiation. The classic studies of Wolbach and Howe (1925) established the necessity for vitamin A to maintain normal differentiation of tissues throughout the body.