- fertilization duct
- (Subclass Copepoda):In female reproductive system, narrow duct connecting median seminal receptacle to end of each oviduct [Stachowitsch, 1992].
Crustacea glossary. Natural History Museum of Los Angeles County. 2011.
Crustacea glossary. Natural History Museum of Los Angeles County. 2011.
Vitelline duct — Fetus of about eight weeks, enclosed in the amnion. (Vitelline duct labeled at lower right.) … Wikipedia
seminal receptacle — Diverticulum of oviduct or external pouch (some pygocephalomorph eocarids, isopod peracarids, and decapods) for storing spermatozoa delivered by male. (Syn. receptaculum seminalis) [Moore and McCormick, 1969]. Diverticulum of oviduct or external… … Crustacea glossary
genital groove — 1. (ARTHROPODA: Chelicerata) In some female spiders, a cleft posterior to the epigynum into which the fertilization duct opens and through which the eggs pass. 2. (ECHIURA) A depression, with or without setae, extending from the nephridopore(s)… … Dictionary of invertebrate zoology
reproductive system, animal — Introduction any of the organ systems by which animals reproduce. The role of reproduction is to provide for the continued existence of a species; it is the process by which living organisms duplicate themselves. Animals compete with… … Universalium
sex — /seks/, n. 1. either the male or female division of a species, esp. as differentiated with reference to the reproductive functions. 2. the sum of the structural and functional differences by which the male and female are distinguished, or the… … Universalium
reproductive system, human — Organ system by which humans reproduce. In females, the ovaries sit near the openings of the fallopian tubes, which carry eggs from the ovaries to the uterus. The cervix extends from the lower end of the uterus into the vagina, whose opening, as… … Universalium
animal development — Introduction the processes that lead eventually to the formation of a new animal starting from cells derived from one or more parent individuals. Development thus occurs following the process by which a new generation of organisms is produced by … Universalium
human embryology — ▪ biology Introduction the process encompassing the period from the formation of an embryo, through the development of a fetus, to birth. The human body, like that of most animals, develops from a single cell produced by the union of… … Universalium
Reproductive system — The reproductive system is a system of organs within an organism which work together for the purpose of reproduction. Many non living substances such as fluids, hormones, and pheromones are also important accessories to the reproductive system. [ … Wikipedia
Spawn (biology) — The spawn (eggs) of a clownfish. The black spots are the eyes developing. Spawn refers to the eggs and sperm released or deposited, usually into water, by aquatic animals. As a verb, spawn refers to the process of releasing the eggs and sperm,… … Wikipedia