- vacuole:
- intracellular cavity.
- vagina:
- duct in female reproductive system used to receive copulatory organ of
male.
- vas efferens:
- duct in male reproductive system that carries spermatozoa away from each
testis.
- vas deferens:
- duct in male reproductive system into which all vasa efferentia drain.
- vector:
- any agent that transmits a disease organism; also, general term given to
blood feeding invertebrate host transmitting a parasite of vertebrates when the
existence or location of sexual reproduction is unclear.
- ventral gland:
- glands on the ventral tegument of Notocotylidae, of uncertain function but
suggested to be involved in respiration.
- vertebrate host:
- general term given to vertebrate host of a parasite when the existence or
location of sexual reproduction is unclear.
- vitellaria:
- glands in Platyhelminthes that produce yolk-filled vitelline cells which
are carried to the ootype and placed around the fertilized ovum.
- vitelline duct:
- a duct carrying vitelline cells from vitellaria to the ootype.
- viviparous:
- producing live offspring within the body of the parent.
- vulva:
- transverse slit in body wall of Nematoda and Acanthocephala through which
female reproductive tract opens.