Ovulation Flashcards
Spontaneous ovulation
Result of series of endocrine events
Induced or reflexed ovulation
Result of genital stimulation
Ovulation happens within 24 hours of _______
Luteinizing hormone peak
LH surge initiates
Final growth and maturation of oocyte
What species have ovulation on left ovary
Swine and chickens
What species does ovulation occur on right ovary usually
Sheep and cattle
Mittelschmerz definition
Pain in abdomen during ovulation in swine
About four hours long
Phase one of gamete transport
Rapid transport
Some sperm reach ova right away due to contractions
Phase two of gamete transport
Slow transport
Slow release of sperm through cervix and accumulation through utero- tubule junction
What happens to unfertilized ova?
Cow, ewe, sow- absorbed in uterine horns
Mares- absorbed by oviducts
Capacitation of sperm
Final maturation
Cattle/sheep- cervix
Mares/swine- uterus
Fertilization step 1
Attachment of sperm to zona pellucida
Fertilization step 2
Acrisome (on sperm head) releases enzymes to dissolve ZP
Fertilization step 3
ZP is penetrated 5-15 minutes after 1st head is attached