As a result of their wide range of behaviors, spiders have become common symbols in art and mythology, symbolizing various combinations of patience, cruelty and creative powers. An irrational fear of spiders is called arachnophobia.
Spiders, classified under Araneae (the largest order of Arachnids), represent a diverse group of air-breathing arthropods known for their distinctive anatomical features.
An automated external defibrillator (AED) is a portable device that can be used to treat a person whose heart has suddenly stopped working. This condition is called sudden cardiac arrest. AEDs are available in many public places, such as government buildings, schools, airports and other community ...
Cardiopulmonary resuscitation (CPR) is an emergency treatment that's done when someone's breathing or heartbeat has stopped. For example, when someone has sudden cardiac arrest or nearly drowns. CPR can help save a life. The American Heart Association recommends starting CPR by pushing hard and fast on the chest. The pushes are called compressions.
Why do high triglycerides matter? High triglycerides may contribute to hardening of the arteries or thickening of the artery walls, called arteriosclerosis. This condition increases the risk of stroke, heart attack and heart disease. Extremely high triglycerides also can cause acute inflammation of the pancreas, called pancreatitis.
A spider is any of more than 51,500 species of arachnids that differ from insects in having eight legs rather than six and in having the body divided into two parts rather than three. All spiders are predators, feeding almost entirely on other arthropods, especially insects.
Here, you’ll discover 42 different types of spiders, each with its own look, behavior, and favorite place to live. For each spider, we’ll show you how it looks, where it lives, what it does, and how to identify it easily.
From the innocent daddy longlegs to the harmful brown recluse, here are the most common house spiders, how to identify them, and when to worry about a bite, according to entomologists.