What are visceral oragans?

i think that mean system like water

Visceral sensations are: Hunger, Thirst, and Hollow Organ fullness

Cancer that had spead to the internal organs

Visceral cancer is cancer of the viscera, which are all soft internal organs, including the heart, reproductive system, digestive and circulatory systems, etc.

Visceral advertising is that which calls out to want rather than need and /or appeals to a visceral [or gut ] feeling , like sex, power , or self-image , or status appeal .