Crypto preservation of Gametes and Embryos and Quizzes(3)

Question 1

what is crypto preservation?

Answer 1

storage at -196 degrees celcius (liquid nitrogen)

Question 2

why do we do crypto preservation?

Answer 2

preserve cells for long periods of time

Question 3

freezing process for cyrpto preservation…

Answer 3

add cryoprotectant, cool, freeze, store, thaw

Question 4

osmotic changes…

Answer 4

concentration

Question 5

osmotic tolerance…

Answer 5

how well a cell survives osmotic changes

Question 6

challenges for sperm?

Answer 6

cannot repair themselves, damage to one renders cell infertility

Question 7

does true conceptus occur in all farm animals?

Answer 7

no

Question 8

why do we do milk calcium tests on mares?

Answer 8

to see how close they are to foaling

Question 9

what starts parturition?

Answer 9

the fetus becoming stressed

Question 10

when happens in stage one of parturition?

Answer 10

cervix dilates to 10 cm, the uterus contracts due to oxytocin, and the fetus goes headfirst to dilate the cervix further

Question 11

what does prostaglandin do?

Answer 11

causes contractions of the uterus and kills the corpora lutea to stimulate release of oxytocin

Question 12

what does relaxin do?

Answer 12

relaxes pelvic muscles

Question 13

what does estrogen do?

Answer 13

stimulates vaginal and cervical mucous secretions

Question 14

what does ocytocin do?

Answer 14

causes contractions

Question 15

what does fetal cortisol do?

Answer 15

causes parturition to occur

Question 16

what layer of the uterus contracts in response to oxytocin?

Answer 16

myometrium

Question 17

define placentome

Answer 17

Point of interface between fetal cotyledon and maternal cotyledon that originates from the caruncle

Question 18

what is red bag?

Answer 18

condition that occurs where both parts of the placenta present together as the mare gives birth

Question 19

What parts of the repro tract are involved in parturition?

Answer 19

cervix, vagina, uterus, vulva