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quiz questions Flashcards

1
Q

Dictyate definition

A

prolonged resting phase in oogenesis where oocyte is arrested in prophase I

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2
Q

what molecules play a fundamental role in the process of blood vessel formation

A

Angiogenic factors

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3
Q

what proteins form gap junctions between cytoplasm of two adjacent cells

A

connexons

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4
Q

what hormone is responsible for secretion of mucus and recruitment of neutrophils

A

estradiol

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5
Q

what growth factors are key oocyte-secreted members of the transforming growth factor beta TGF-B superfamily

A

FF-MAS
cAMP

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6
Q

doppler effect to capture imaging movement of tissue and body fluids

A

doppler ultrasonography

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7
Q

low viscosity mucus that creates privileged pathways

A

sialomucin

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8
Q

signaling molecule for oocyte to cumulus cell communication

A

GDF-9

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9
Q

signaling molecule for cumulus to oocyte communication

A

kit-ligand or amino acids

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10
Q

type of communication from oocyte to cumulus cells

A

paracrine

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11
Q

type of communication from cumulus cells to the oocyte via kit-ligand

A

paracrine

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12
Q

type of communication from cumulus cells to the oocyte via amino acids

A

gap junctional

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13
Q

what molecule is present on pig cells that can cause organ rejection

A

alpha 1,3-galactose

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14
Q

gastrulation definition

A

formation of germ layers of early embryo

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15
Q

decondinsation definition

A

chromatin remodeling of sperm nucleus by replacing protamines with histones

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16
Q

male specific gene when knocked out will ablate endogenous germline

A

NANOS2

17
Q

process of plasma membrane and outer acrosomal membrane fuse

A

vesiculation

18
Q

specialized region on sperm head that allows the oocyte plasma membrane to fuse

A

equatorial segment

19
Q

T/F hMG is used as medication for ovarian stimulation for women undergoing ART cycle

A

TRUE

20
Q

what enzyme is responsible for digestion of the zona pellucida

A

acrosin

21
Q

T/F in gene editing there are two DNA repair mechanisms where homologous direct repair allows for insertion of a specific gene

A

TRUE

22
Q

what drives blastoceol formation

A

water influx

23
Q

changes in oocyte from LH surge

A

-gap junction breakdown between granulosa cells and oocyte
-removal of meiotic inhibition
-first polar body
-haploid oocyte
-fertilization

24
Q

what does preovulatory LH surge cause in relation to the follicle

A

-increased PGE2
-increased PGF2a
-shift from E2 to P4 by dominant follicle

25
Q

oocyte secreted factors

A

GDF-9
BMP-15
BMP-6

26
Q

cumulus cell secretions

A

FF-MAS
EGF-like peptides

27
Q

how is an embryo formed from 3 adults

A

-nucleus from donor egg is removed and nucleus from mothers egg is inserted
-egg is fertilized with fathers sperm

28
Q

what does hyaluronidase do

A

digest hyaluronic acid to allow sperm penetrate cumulus granulosa cells

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