They are - take a deep breath Latin coming up - syconium. The best way I can think of explaining this is that it is like enclosing a bouquet of flowers inside a closed bag. What we think of as the fruit bud is a hollow container on the inside wall of which are lots and lots of tiny male and female flowers. I suppose it's sort of like a turned inside out strawberry where instead of seeds there are flowers. These flowers produce multiple fruits and the syconium swells to accommodate them as they grow.
In other countries the flowers are pollinated by a special tiny wasp. Reading the way in which pollination takes place I am glad ours are unpollinated.