Q. Which of the following organ / tissue of human body is most sensitive to intake of lead?
Answer: Brain
Notes: Lead is a heavy metal that is highly toxic, especially to the brain and nervous system. While lead can accumulate in various tissues, the brain is especially vulnerable even to low levels of lead exposure. Lead can cross the blood-brain barrier and cause neurological impairments, brain damage, reductions in IQ and cognitive abilities, and other long-lasting health effects. The developing brains of children are particularly susceptible to lead toxicity as well.