| Ampulla pulla of vas deferens Ampulla of ductus deferens | |
| Latin: | ampulla vas deferentis ampulla ductus deferentis |
The ampulla pulla of vas deferens, also called the ampulla pulla of ductus deferens, is an enlargement of the vas deferens at the pulla fundus of the bladder which acts as a reservoir for sperm. This structure is seen in some mammalian and squamate species and is sometimes tortuous in shape.