Shared Flashcard Set

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Repro
Godke
57
Agriculture
Graduate
03/23/2011

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Cards

Term
What day does cow fetal heart begin to beat?
Definition
21
Term
What day does cow fetal cotyledons appear on chorion
Definition
30-33
Term
What day do cow fetal eyelids close?
Definition
60
Term
What day do cow fetal hair follicles appear
Definition
90
Term
What day do cow fetal horn pits appear?
Definition
100
Term
What day do cow fetal teeth begin to errupt?
Definition
110
Term
What day do cow fetal hair follicles develop around the eyes and muzzle?
Definition
150
Term
What day does cow fetal hair cover its whole body?
Definition
230
Term
When is defined abortion in a cow?
Definition
before 260d
Term
What day is defined abortion in the mare?
Definition
before 290d
Term
When is defined abortion in the sow?
Definition
before 110d
Term
What type of placenta do mares have?
Definition
diffuse (epitheliochorial)
Term
Wha type of placenta do cows have?
Definition
Cotyledonary (epitheliochorial)
Term
What type of placenta do pigs have?
Definition
Diffuse (epitheliochorial)
Term
What type of placenta do dogs and cats have?
Definition
zonary (endotheliochorial)
Term
What type of placenta do humans have?
Definition
discoid (hemochorial)
Term
At what stage in gestation is a cow fetus the size of a mouse?
Definition
60d
Term
At what stage in gestation is a cattle fetus the size of a small rat?
Definition
90d
Term
At what stage in gestation is the bovine fetus the size of a small cat?
Definition
120d
Term
At what stage in gestation is the bovine fetus the size of a large cat?
Definition
150
Term
At what stage in gestation is the bovine fetus the size of a small dog?
Definition
180d
Term
What is Klinefelter's syndrome?
Definition
Men with an extra X chromosome in most cells. Result is infertility and decrease in T production
Term
What is RH disease?
Definition
RH antibodies attack baby and cause miscarriage. Blood disease and can inherit from father and is transfered to baby b/c of placenta type
Term
What is the foramen ovale?
Definition
flap in heart that closes and make it more efficient and strong
Term
What drug should you induce parturition with in cows?
Definition
1. Dex (past 270d)or 2. PGF2A and E17B
Term
What drug should you induce parturition with in the sow?
Definition
PGF2A (110d)
Term
What drug should you induce parturition with in the ewe?
Definition
E17B
Term
What drug should you induce parturition with in the doe?
Definition
Dex (carbon cortacoid, potent cortisol)
Term
What drug should you induce parturition with in the mare?
Definition
Don't induce gestation b/c length is so variable, but if you did use: 1. Oxytocin 2. PGF2A
Term
What are Braxton Hicks contractions?
Definition
4-6wks early contractions in humans
Term
What drug can you give to encourage acceptance of offspring after parturition?
Definition
Oxytocin
Term
When do piglets select their nipple?
Definition
48-72 hrs after parturition. runts on ends.
Term
Which expresses estrus earlier following older cows, young cows, or heifers?
Definition
older cows. usually 70d postpartum
Term
When does uterine involution occur in cows?
Definition
30-35d
Term
Would is the function of HY antigen?
Definition
selects gonadal differentiation, expressed by male autosomes (Y)
Term
How do you express sex in chickens?
Definition
Male-ZZ Female-ZW
Term
What species deposit semen in the vagina?
Definition
bull, ram, buck
Term
What species deposit semen in the uterus?
Definition
boar
Term
What pulls testes into scrotum?
Definition
gubernaculum
Term
What would you give to a stallion to test fertility?
Definition
hCG or LH
Term
What is the function of accessory sex glands?
Definition
stimulation, addition of seminal fluid, nutrients,
Term
Whats another name for the bulbourethral gland?
Definition
cowpers gland
Term
How much cooler is the testicle than the body?
Definition
1-2 degrees
Term
What cools testicles?
Definition
pampiniform plexus veins.
Term
Interstitial cells are also known as what in the male?
Definition
Leydig cells
Term
Sprem formation starts at?
Definition
Basement membrane
Term
What is function of rete testes
Definition
Where sperm is collected from the seminiforous tubules
Term
Tissue layers of scrotum to testicle (outside to inside)
Definition
Scrotal skin, Tunica dartos, scrotal fascia, parietal tunica vaginalis, vaginal cavity, tunica albuginea
Term
Duration of spermatogenesis in ram
Definition
49d
Term
duration of spermatogenesis in bull
Definition
48d
Term
duration of spermatogenesis in man
Definition
64d
Term
Leydig cells produce what hormone?
Definition
T
Term
Sertoli cells produce what hormone?
Definition
Estrogen
Term
All other species testicles descend halfway through gestation, what specie descend just before or after birth?
Definition
Stallion
Term
Which specie has the largest sperm cell
Definition
bull
Term
which specie has the smallest sperm cell
Definition
stallion
Term
What is lordosis
Definition
female arching the back during sex
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