The ampulla pulla of vas deferens, also called the ampulla pulla of ductus deferens, is an enlargement of the
vas deferens
The vas deferens (: vasa deferentia), ductus deferens (: ductūs deferentes), or sperm duct is part of the male reproductive system of many vertebrates. In mammals, spermatozoa are produced in the seminiferous tubules and flow into the epididyma ...
at the
pulla fundus of the bladder
The bladder () is a hollow organ in humans and other vertebrates that stores urine from the kidneys. In placental mammals, urine enters the bladder via the ureters and exits via the urethra during urination. In humans, the bladder is a distens ...
which acts as a reservoir for sperm. This structure is seen in some
mammal
A mammal () is a vertebrate animal of the Class (biology), class Mammalia (). Mammals are characterised by the presence of milk-producing mammary glands for feeding their young, a broad neocortex region of the brain, fur or hair, and three ...
ian and
squamate
Squamata (, Latin ''squamatus'', 'scaly, having scales') is the largest Order (biology), order of reptiles; most members of which are commonly known as Lizard, lizards, with the group also including Snake, snakes. With over 11,991 species, it i ...
species and is sometimes tortuous in shape.
External links
* (link broken, archived at: https://web.archive.org/web/20060913151712/http://ect.downstate.edu/courseware/haonline/labs/l44/040201.htm ) - "The Male Pelvis: The Urinary Bladder"
Mammal male reproductive system
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