The male then endeavours to bring the two anal orifices together, and when he has succeeded in getting the female to distend her cloacal opening, the intromittent organs are suddenly everted into the vagina.
The males are provided with a pair of intromittent organs, or hemipenes, each connected with one of the caudal vertebrae by a muscle (retractor penis) which often exceeds it in length.
There are a great many animals, from jelly-fishes to fishes and frogs, in which fertilisation is external, and there are no intromittent organs at all.
The intromittent organ, io, which projects cephalad from the wall of the cloaca, is here seen as a three-pointed body of considerable size, projecting ventrally from the body.
In the surf-fishes (Embiotocidae) the structure of part of the anal fin is modified, although it is not used as an intromittent organ.
The fourth category is represented by the Apoda or Caecilians in which, as we have stated above, the male is provided with an intromittent organ.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "intromittent" in a variety of sentences. We hope that you will now be able to make sentences using this word. Other words: admissible; hospitable; inviting; open; receivable; receptive; recipient; welcoming