Term
| The pheromone induced effect in pigs where maintaining a boar next to a group of peri-pubertal gilts induced earlier puberty onset is an example of |
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Definition
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Term
| In development of the male reproductive tract |
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Definition
| Accessory sex glands develop from the urogenital sinus |
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Term
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Definition
- Hyperactive motility develops in the oviduct
- hyaluronidase assists sperm penetration of the cumulus oophorus
- the sperm attaches to the oolemma at the equitorial segment
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Term
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Definition
- Usually reduced to hihyrdotestosterone
- Produced by the leydig cells
- maintains the latter stages of spermatogenesis
- maintains growth and development of the accessory sex glands
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Term
| The only accessory gland that sperm actually enter, and are in fact stored, is... |
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Definition
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Term
| The most exclusive component of the blood-testis barrier is... |
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Definition
| Sertoli cell tight junction |
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Term
| During spermiogenesis, the acrosome develops from.... |
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Definition
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Term
| Indicate a species that possesses a bicournate tract, diffuse and epitheliochorial placentation, a spring-summer breeding season and does not require progesterone during the last third of gestation for maintenance of pregnancy |
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Definition
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Term
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Definition
- Increases myometrial contractility
- responsible for the milk ejection reflex
- is a hypothalamic hormone
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Term
| Development of primary and secondary follicles.... |
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Definition
| occurs during both pre- and postpubertal life |
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Term
| During oogenesis for most species.... |
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Definition
- A secondary oocyte is ovulated
- activation is required for completion of meiosis
- terminal oogenetic stage is the ootid
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Term
| The hormone responsible for maintenance of spermatogenesis up to the secondary spermatoctye.... |
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Definition
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Term
| In the model proposed for regulation of the breeding season the pivotal factor is a change in the sensitivity of the hypothalamic.... |
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Definition
| tonic center to estradiol |
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Term
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Definition
- is reversible
- results in less cholesterol in the sperm plasma membrane
- occurs in the uterus
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Term
| Indicate a species that is hemochorial, possesses a duplex tract, a reflex ovulator, and requires luteal progesterone for maintenance of pregnancy to term |
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Definition
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Term
| Receptors for this pituitary hormone increase in the pregnany cows endometrium and participat ein prolonging the lifespan of the CL |
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Definition
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Term
| Indicate the correct route for sperm transport |
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Definition
Seminiferous tubule
tubuli recti
rete testes
efferent ducts |
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Term
| What follicle stages can a primary oocye be found |
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Definition
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Term
| The portion of the broad ligament that directly supports the oviduct |
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Definition
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Term
| When comparing the estrous and menstrual cycles |
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Definition
| the follicular and luteal phases are of equal duration in the menstrual cycle |
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Term
| During embryo development |
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Definition
- Determination occurs at the morula stage
- inner cell mass and trophectoderm appear at the blastocyst stage
- Totipotency is maintained until atleast the eight-cell stage
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Term
| Indicate the species that possesses a bicournate tract, epithelichorial and diffuse plancentation and requires luteal progesterone for maintenance of pregnancy to term |
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Definition
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Term
| Of the four fetal membrane/ fluid compartments listed, which appears first |
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Definition
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Term
| In the two-cell, two-hormone model for estradiol production in the graafian follicle.... |
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Definition
| grnaulosa cells possess aromatase and respond to FSH |
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Term
| In rats and mice, maintenance of the CL during pregnancy is due to.... |
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Definition
| Prolactin for the first half, placental lactogen for the second half |
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Term
| The zona pellucida first appears at what stage? |
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Definition
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Term
| The anterior lobe of the pituitary is comprised of... |
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Definition
| pars distalis and pars tuberalis |
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Term
| Proposed luteolytic mechanisms include.... |
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Definition
- apoptosis
- hypoxia due to vasoconstriction
- interruption of the PKA system
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Term
| The neurohyopophysis is comprised of.... |
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Definition
| Meidan eminence, infundibular stalk, pars nervosa |
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Term
|
Definition
- Phospholipase C
- Diacylglycerol
- Polyphosphoinositides
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Term
| When an embryo enters diapause.... |
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Definition
- does not attach to the endometrium
- has low metabolic rate
- has reduced RNA synthesis
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Term
| A pseudostratified columnar epithelium can be found in.... |
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Definition
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Term
| Cortisol causes the placenta to shift from progesterone to esrtadiol production because it stimulates synthesis of which enzyme involved in estradiol production |
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Definition
- 17-20 lyase
- 17 alpha- hydroxylase
- aromatase
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Term
| Consider a woman who had a primordial follicle pool of 5 million oocytes and had 500 menstrual cycles before entering menopause. If she had 5 children, the pergentage of her metaphase II ooctyes that completed oogenesis is |
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Definition
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Term
| In the females listed, which one has the longest estrus |
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Definition
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Term
| The human would be classified as.... |
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Definition
| spontaneous ovulating, hemochorial, deciduate and discoidal placenta |
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Term
| Increased tonic plasma [FSH] and [LH] during proestrus.... |
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Definition
- cause estradiol to reach threshold
- stimulate androgen production
- stimulate granulose cell proliferation
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Term
| Indicate a species with a bicournate tract, synepitheliochorial and cotylendonary placentation, fall breeding season, and requires luteal progesterone for maintenance of pregnancy to term |
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Definition
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Term
| The glands of bartholin are located where |
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Definition
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Term
| In most sterile-mated alpacas, if the right uterine horn was removed on day 4 after ovulation and her ovaries examined 10 days later, then one would expect to see CL on... |
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Definition
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Term
| Exposing a female to androgens would result in.... |
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Definition
| Development of Mullerian and Wolffian ducts |
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Term
| During ovulation, granulosa cells.... |
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Definition
- start producing progesterone
- stop producing OMIF
- release plasminogen activator
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Term
| An amniochorion can be found in the fetal membranes of... |
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Definition
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Term
| Sperm in the perivitelline space are know as... |
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Definition
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Term
| A distinguishing feature of this organ is the presence of crypts in the mucosa |
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Definition
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Term
|
Definition
- Luteotropic
- stimulates testosterone production
- is ovulatory
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Term
| The blind pouch located in the vestibule and within the urethral orifice |
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Definition
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Term
| Follicle cells that surround the oocyte in the primordial follicle constitute... |
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Definition
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Term
| Anovulatory postpartum estrus |
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Definition
|
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Term
|
Definition
| is a fetal blood vessel that shunts blood from the umbilical vein to the post vena cava |
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Term
|
Definition
| luteolytic in all livestock species |
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Term
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Definition
| A cell producing a factor that can work back on itself to stimulate a response |
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Term
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Definition
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Term
| Segment of the epididymis involved in sperm storage |
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Definition
|
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Term
| when is the greatest number of primordial follicles found? |
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Definition
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Term
| Which fluid has lower protein? |
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Definition
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Term
| Similarity between cow during lactational anestrus amd prepubertal ewe |
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Definition
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Term
| The lifespan of epididymal sperm is dependent on.... |
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Definition
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Term
| Castration will cause FSH levels.... |
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Definition
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Term
| Receptors for androgens and estrogens are located.... |
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Definition
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Term
| Naturally delayed implantation |
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Definition
| Species in which gestation can be reduced by manipulating the photoperiod |
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Term
| Ejaculation is facilitated by contraction of... |
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Definition
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Term
| Reason why the GnRH surge center develops in the female in the presence of ovarian estradiol |
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Definition
| Because alpha-fetoprotein binds estradiol and prevents it from entering the brain |
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Term
| Fetuses with atrophied pituitary glands generally have.... |
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Definition
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Term
| Activin selectively causes.... |
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Definition
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Term
| The depression in the sphenoid bone where the pituitary is located is called.... |
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Definition
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Term
| Typical arrangement of smooth muscle in reproductive tract |
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Definition
Outer longitudinal
inner circular |
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Term
| Relative plasma progesterone concentrations during pregnancy and pseudopregnancy in the queen |
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Definition
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|
Term
| Relative fetal cortisol, plasma progesterone and estrogen concentrations during parturition in the cow |
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Definition
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Term
|
Definition
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Term
| Relative progesterone and estrogen concentrations during pregnancy in humans |
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Definition
|
|
Term
| Relative progesterone concentrations in the pregnant and non pregnant dog |
|
Definition
|
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Term
| This placental type is characterized by chorionic capillaries immersed in endometrial blood. Observed in last trimester of only a few species |
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Definition
| Hemoendothelial in rabbit |
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