Explaining Biology on Instagram: "Biology doesn’t have to be confusing or boring. Sometimes, all it takes is a simple visual to make complex concepts finally click. Biological valves are found throughout the human body—inside veins, the heart, and other systems—working silently to ensure blood and fluids flow in the right direction. These valves open when pressure moves forward and close instantly to prevent backflow, protecting the body from serious complications. This quick demonstration shows

Explaining Biology on Instagram: "Dead bodies can sometimes appear to move, and it’s due to natural biological processes after death—not anything supernatural. Here’s why it happens: Why it looks like movement Muscle relaxation: After death, muscles lose control and can relax or shift slightly. Rigor mortis: Muscles stiffen over hours, then later relax again, which can cause small changes in posture. Gas buildup: Decomposition produces gases in the abdomen and chest, which can move limbs, cause