Quiz
Final Exam Review
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Questions in this quiz (30)
1What is the purpose of white blood cells within the FRT?
- ASpermatozoa are foreign to the female reproductive tract. Some are attacked by white blood cells.
- BNone.
2What is one benefit and one challenge that is a result of these white blood cells being in the female reproductive tract?
- ANon-motile and abnormal spermatozoa are removed (benefit)
- BOther normal cells may be removed (challenge)
3What is capacitation?
- AThe biochemical change to sperm that allows the true acrosome reaction to occur
- BNone
4How does capacitation alter sperm motility?
- AChange in tail motility (hyper-activation)
- BNone
5Fertilization can occur without capacitation.
- ATrue
- BFalse
6What is the primary purpose of the acrosomal reaction?
- AFusion of sperm plasma membrane and outer acrosomal membrane
- BNone
7What is “vesiculation”?
- APores develop at point of fusion and enzymes in the acrosome can be released
- BNone.
8How does the nucleus of the sperm change once the sperm is engulfed by the oocyte?
- ADecondenses
- BNone
9Label the layers/parts of the oocyte labeled A, B, and C.
- AZona pellucida
- BNone
- CPerivitelline space
- DNone
- EOocyte nucleus
- FNone
10Label at least 4 structures of early embryo genesis.
- Aootid
- BNone
- CZygote
- DNone
- ETwo-celled stage
- FNone
- GFour-celled stage
- HNone
11What is the function of the allantois?
- ACarries blood vessels of placenta
- BNone
12What is the function of the amnion?
- AProtects fetus from injury, provides lubrication for parturition, reservoir for urine and wastes
- BNone
13Maternal recognition of pregnancy is necessary in many species to prevent pregnancy loss caused by what irreversible event?
- ALuteolysis
- BNone
14In order for maternal recognition of pregnancy to occur in the ewe/cow, what (if anything) is secreted by the conceptus to signal its presence
- AInterferon Tau
- BNone
15How does the presence of the conceptus affect PGF2α production?
- AProtects CL by preventing PGFRa pulses.
- BNone
16In order for maternal recognition of pregnancy to occur in sows, what (if anything) is secreted by the conceptus to signal its presence?
- AEstrogen
- BNone
17How does the presence of the conceptus affect PGF2α production in sows?
- AEstradiol does not inhibit PGF2a but causes it to be rerouted -> away from submucosal capillaries (for countercurrent exchange transport)
- BNone
18In order for maternal recognition of pregnancy to occur in mares, what must happen?
- AEmbryo must migrate between horns from days 12 – 17 of gestation
- BPresence of the conceptus prevents Luteolysis -> reduces endometrial production of PGF2a
19Complete the table below to indicate the correct classification of placenta for each species. The dog is provided as an example
- AEpitheliochorial
- BEpitheliochorial also
- CHemochorial
- DEpitheliochorial again
- EDiffuse
- FDiffuse also
- GCotyledonary
- HDiscoid
20Describe the main characteristics of a diffuse placenta type.
- AUniform distribution of chorionic villi
- BInitial attachment occurs around day 12 of gestation and is well established by day 18 – 20 after fertilization
21How does the zonary placenta type differ from the diffuse placenta type?
- AHas prominent exchange region (chorionic villi) that forms a zone near the middle of the conceptus
- BNone
22The placental unit of trophoblastic origin consisting of abundant blood vessels and connective tissue, found in ruminants, is called:
- ACotyledon
- BNone
23Although mares, sows, and ruminants (ex: cows) all have epitheliochorial placentas, the placenta of the cow is different compared to the sow and mare. What are 2 differences?
- ACaruncles/Endometrial folds
- BNone
24When classifying placentas based on level of intimacy/number of tissue layers, what type would have 6 layers?
- AEpitheliochorial
- BNone
25Which is the “most intimate placenta type”?
- AHemochorial
- BNone
26The fetus triggers the onset of parturition by secreting [blank_start]cortisol[blank_end].
- Acortisol
- BNone
27What 3 hormones contribute to myometrial contractions during parturition?
- AOxytocin
- BEstrogen
- CPGF2a
28Which hormone is released as a consequence of pressure on the cervix?
- AOxytocin
- BNone
29Which hormone allows for loosening/widening of the birth canal to allow for parturition?
- ARelaxin
- BNone
30What is dystocia?
- Atrouble giving birth
- BNone
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- Quiz on Final Exam Review, created by Trent McNutt on 06/05/2019.
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- Trent McNutt
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