Can some types of HM like mercury can be absorbed directly into the bloodstream through this route of exposure?

Yes, certain heavy metals like Mercury can be absorbed directly into the bloodstream through various routes of exposure, including inhalation, ingestion, and dermal contact. For instance, inhaling mercury vapor can lead to rapid absorption into the bloodstream, while organic forms of mercury, such as methylmercury, can be readily absorbed through the gastrointestinal tract. This direct absorption poses significant health risks, as mercury can then affect multiple organ systems and lead to toxic effects.