All mollusks build their own shells, whether they live in water or on land. Creatures like snails, clams, oysters and mussels use an organ called a mantle to secrete layers of calcium carbonate ...

Using a blood pressure chart by age can help you interpret your results to see how they compare to the normal ranges across groups and within your own age cohort. Monitoring your blood pressure (BP) ...

Features include dedicated speed-dial buttons for "mom" and "dad", LCD display with selectable backlight color, 20-number speed dial list, flashing lights, user-changeable shells, internal antenna ...

Because oxygen pressure is higher in the alveoli than it is in the adjacent capillaries (tiny blood vessels), it flows into the capillaries. When the body is functioning normally, the normal range for ...