female reproductive tract. broad ligament suspends the female reproductive tract in the pelvic...
TRANSCRIPT
Female Reproductive Tract
Broad Ligament
• suspends the female reproductive tract in the pelvic cavity
• has three portions
Ovary• release ova- egg• 50,000 - 150,000 potential eggs
present at birth• release hormones• progesterone• estrogen
Oviduct
• (fallopian tube)
• connect ovary to uterine horns
Oviduct
• three portions
• infundibulum
• ampulla
• isthmus
Oviduct
• ova remains in oviduct for 3-6 days
• 1/8 inch in diameter
• 20 cm. Long in a cow
Uterus• passageway for sperm cells from
cervix to oviduct
• produce histotroph - nourishes developing embryo until placenta forms
• expel fetus at parturition
Parturition
• birth
Uterus
• site of pregnancy
Cervix• located between uterus and vagina
• forms a barrier between the internal and external environment
• thick walled, many ringed organ
Vagina
• point where urinary and reproductive tracts join
• receptacle for semen
• passageway for fetus
Vulva
• outer opening of reproductive tract
Clitoris
• sensory organ
Hormones
• estrogen
• progesterone
• FSH
• LH
• HCG
Estrogen
• produced by the follicle in non pregnant female and placenta in late pregnancy
• induce estrus - heat
• responsible for female contour
Estrogen
• develop duct system of mammary gland
• causes edema - retention of water
• increases muscle development
Progesterone
• hormone that keeps female out of heat
• relaxes uterus
• secretion of histotroph
FSH
• follicle stimulating hormone
• development of follicles on ovary
• ova are released from follicle
FSH
• indirectly responsible for estrogen production
LH
• Lutenizing hormone
• causes ovulation
• ova is released from the follicle
HCG
• Human Chorionic Gonadotropin
• produced by the placenta of pregnant women early in pregnancy
HCG
• used on cows that are cystic - won’t ovulate
• causes ovulation
Ovulation
• release of ova from ovary
• follicle develops - blister on ovary
• follicle bursts - egg is released
Ovulation
• a hole is left where the ova was
• forms a C.L. (Corpus Luteum) - yellow body
C.L.
• produces progesterone
• if female becomes pregnant a new follicle does not burst and estrogen production is reduced
Gestation• length of time from conception till
birth
• cows - 281 days
• pigs - 114 days (3 mos, 3 weeks, 3 days)
• horses - 336 days
Gestation
• sheep - 148 days
• goats - 151 days