Making Science Simple, Sharing Life Honestly

A sphygmomanometer is a device that measures blood pressure. It is composed of an inflatable rubber cuff, which is wrapped around the arm. A measuring device indicates the cuff's pressure. A bulb inflates the cuff and a valve releases pressure. A stethoscope is used to listen to arterial blood flow sounds.   In 1881, von Basch created the sphygmomanometer and the first non-invasive BP measurements. However, in 1896, Scipione Riva-Rocci developed further the mercury sphygmomanometer, almost as we know it today.  The sphygmomanometer could only be used to determine the systolic BP Digital sphygmomanometers are automated, providing blood pressure reading without needing someone to operate the cuff or listen to the blood flow sounds.   However, digital types need to be more accurate. In some situations, some healthcare providers use digital sphygmomanometers for screening and manual ones to validate readings. Shaik Urwa Noorin. A cycle 2&3 teacher with a passion for ...

Which animal has 3 hearts, 9 brains and blue blood? Octopus Octopuses have 3 hearts, because two pump blood to the gills and a larger heart circulates blood to the rest of the body. Octopuses have 9 brains because, in addition to the central brain, each of 8 arms has a mini-brain that allows it to act independently. Octopuses have blue blood because they have adapted to cold, low oxygen water by using hemocyanin, a copper rich protein. We know that octopuses are intelligent, because they like to play and use tools – but we have no way of relating to what it would be like to have 9 brains. The central brain is a doughnut shape that forms a ring around the esophagus, so when an octopus swallows, its food must ‘pass through’ the brain! What a concept! Food for thought…? The most interesting thing is that they have a mini brain in each arm. This adds up to a lot of distributed brain power. Since each arm has a mini brain, the central brain just sends a higher-level signal to th...

Life's canvas is a vivid masterpiece, but its colors can become overwhelming without the support of a loving partner in both personal and professional realms. What may seem like bursts of frustration are, in reality, silent pleas from an overstimulated soul, yearning for a moment's respite. Picture this: the TV blaring, the dryer humming, the lawnmower's persistent buzz, my Apple Watch chiming urgently, a too-tight shirt, a rebellious messy bun, and the undeniable sensation of crumbs beneath my feet. It's not anger; it's a sensory symphony that craves a pause, and alhamdulillah, I am blessed to have a family that understands. Being an adult is an exhausting journey where demands never cease—at work, at home, even in the bathroom. It's not irritation; it's an admission of feeling overstimulated, desperately needing a moment to catch my breath. In this whirlwind, taking a moment for myself is not a weakness but an act of self-preservation, made possible throug...