Kidney Homeostatic Functions, Animation

The urinary system is best known for removing metabolic wastes from the body in the form of urine, but its importance goes far beyond that function. As the kidneys filter large amounts of blood plasma, they are well positioned to detect changes in blood volume and composition, and respond accordingly. In fact, the kidneys are critical in maintaining steady state, […]

Making cancer as harmless as the common cold | Michio Kaku

I think we’re entering the fourth wave of scientific innovation and wealth creation. The first era was steam power, when we physicists worked out the laws of thermodynamics we could calculate how much energy you get from a lump of coal to energize a locomotive or a steam engine or a factory. That was the first big breakthrough. The second […]

Premature Ventricular Contractions (PVCs), Animation

premature ventricular contractions PVCs are premature heartbeats originating in one of the lower chambers of the heart the ventricles PVCs can result from a variety of factors and conditions including consumption of alcohol caffeine tobacco or drugs certain medications physical exercise stress or anything that increases adrenaline levels certain electrolyte deficiencies and damaged cardiac tissue caused by other heart diseases […]

For First Time, Heart Attack Info Is Female-Focused

CLARK POWELL: By checking her pulse rate and blood pressure every day, Carmela Powers can spot even the most subtle signs of heart problems. But for years, she unknowingly ignored them. Carmela would get pain in her jaw and had no idea it was a symptom of serious heart trouble. CARMELA POWERS: Down in here, this is where it would […]

Abnormal Heartsounds and Murmurs: Which heart sounds should worry you

Abnormal heart sounds and murmurs often reflect important underlying structural heart disease, a term that refers to problems with either the heart valves or the heart muscle (or sometimes both). But before we tackle abnormal heart sounds and murmurs, we should first review briefly the normal heart sounds. Recall that it is closure of heart valves that produces the normal […]