Answers. Relevance. Rating Newest Oldest. Best Answer: a Spanish term that was formerly used in the Spanish Empire to designate people of mixed European (Spaniard) and Amerindian ancestry living in the region of Latin America.[1] The word originated from the Romance language / Latin word Mixticius, meaning mixed.
For centuries, lead toxicity has been one of the most significant preventable causes of neurologic morbidity from an environmental toxin. A heavy metal, lead is ubiquitous in our environment but has no physiologic role in biological systems.
1 The most common cause of heavy metal poisoning is lead. 2  The incidence of lead poisoning has been falling steadily in affluent countries, due to removal of lead from paint, petrol and food cans. 3  Lead poisoning remains a problem, however, in older housing where lead water pipes and lead paint may still be present.