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.
Periods typically occur every 4 weeks and last no more than 7 days. Sometimes, periods become especially heavy and last an unusually long time. Several things can cause heavy or prolonged menstrual bleeding, called menorrhagia.Possibilities include reproductive system problems and disorders unrelated to reproductive function.ne or more noncancerous growths called uterine fibroids, or leiomyomas, are a common cause of heavy flow. These growths develop in the uterine wall and contain muscle and other tissue. Other noncancerous growths, called polyps, can develop on the surface of the uterine lining and also cause heavy, long periods.