Nephila clavipes. Arachnology is the scientific study of spiders and related animals such as scorpions, pseudoscorpions, and harvestmen, collectively called arachnids. Those who study spiders and other arachnids are arachnologists. The word arachnology derives from Greek á¼ÏÎ¬ÏÎ½Î·, arachnÄ, spider; and -Î»Î¿Î³Î¯Î±, -logia
Heavy Menstrual Bleeding: Symptoms and Treatment. Heavy menstrual bleeding (called menorrhagia by health care professionals) is defined as soaking a pad and/or tampon every hour or less during each menstrual cycle. For many women, heavy menstrual bleeding is a huge obstacle to their lifestyles.
Heavy menstrual periods can lead to a number of complications if not treated immediately. Every womanâs menstrual cycle is different. Normal menstrual flow occurs every 28 days, but can range from 21 days to 35 days, and lasts approximately 4 days (total loss of blood = 30 to 40 milliliters = 2 to 3 tablespoons).