fertilization (2) Flashcards
what is transcervical insemination?
directly in the uterus
what is intracervical insemination?
into the cervix
what is intravaginal insemination?
into the vagina
what is laproscopic surgery?
surgery in abdomen
what animals need transcervical insemination?
cow and goat
what animals needs intracervical insemination?
pig
What animals need intravaginal insemination?
dog and cat
what animals need laprascopic surgery?
sheep
what is a zygote?
one cell (first step)
what is syngamy?
mitosis, adhesion of male and female DNA
what is an embryo?
not easily recognized as part of species
what is a fetus?
easily recognized as part of species
what is conceptus?
product of conception (placenta and fetus)
four steps of preuterine attachment…
development in zona pellucida, hatching of blastocyst from zona pellucida, maternal recognition of pregnancy, formation of membranes
what membranes are formed in preuterine attachment?
amnion, chlorion, allantois
what does the morula stage look like?
a cluster of grapes
what happens in the morula stage?
inner cells are one population, outcer cells are another, and creates fluid filled cavity
what junction includes the inner cells?
gap junctions
what do gap junctions allow?
intercellular communication
what junction includes the outer cells?
tight junctions
what do tight junctions alter?
permeability
what happens when the blastocyst hatches?
growth and fluid build up, enzyme production, and contractions
once in the uterus what does the embryo depend on?
adequate luteal function, adequate progesterone syntheses, responsiveness of uterus to progesterone
what are the extraembryonic membranes?
yolk sac, chorion, amnion, allantois
what is retrograde loss?
in the cervic
where are the privledged pathways?
cervix
where does fertilization take place?
ampulla in oviduct
