respiratory system
The respiratory system is a one-way chemical trade zone that admits oxygen and evicts unwanted carbon dioxide. Lungs, trachea, and bronchi form a conveyor belt that tirelessly processes air as raw material. Often forgotten until they stop, causing both biological and societal uproar at the slightest failure. This underappreciated workforce silently endures stress and pollution while being relentlessly overworked. Ironically, they only receive attention when masks come into fashion.