to keep them moist
No, crickets do not have antennae on their hind end. They have two long antennae on the top of their head.
through your mouth
they smell with there antennae.
They groom their legs by running them through their mouthparts, and their heads and antennae by rubbing them with their legs.
yes they are blind and they do not see with their antennae they use the antennae to locate their surroundings. so yeah they do kind of "see" with their antennae
crickets hide from their predictors by having great camouflage, and by having a special antennae so they can hear any of their predators for about a mile away.
Bees taste with the mouth, tip of the feet and antennae.
I don't know much about an African cave cricket but ill tell you the things i know! The length for an African cave cricket is 38mm. They are located in Northern Africa, Southern Europe. Cave crickets can be recognized by their humped backs, and they are sometimes known as camel crickets. They have extra long hindlegs for jumping, and even longer, sensitive antennae. They use their antennae to help them detect predators. There are about 500 species of cave crickets around the world.
through their lungs
No
Yes, but very small, short ones. In general, the better an insect's eyesight, the shorter the antennae are (dragonflies, houseflies), and the worse, the longer (cave crickets).
The antennae appear to be long smooth rods to the naked eye. However, under a lens it is apparent that the antennae have many spikes sticking out the sides.