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NCM 107 > Process of Conception > Flashcards

Process of Conception Flashcards

1
Q

Fertilized ovum is called

A

Zygote

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2
Q

How many days does the zygote stays in the fallopian tube?

A

3 days

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3
Q

When there are already 16 blastomeres, it is termed?

A

Morula

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4
Q

How many days does the blastocysts stay in the uterus

A

3-4 days

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5
Q

Fingerlike projections that surrounds the blastocyst

A

Trophoblast

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6
Q

Other term for implantation

A

Nidation

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7
Q

________ are the one’s which implant high on the anterior
or posterior surface of the uterus

A

trophoblast

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8
Q

When a cavity is formed
in the morula, it is termed as ___________

A

blastocyst

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9
Q

How many blastomere does it take for it to turn into morula?

A

16 blastomeres

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10
Q

It is the contact between the
trophoblast and the uterine endothelium.

A

Implantation/nidation

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11
Q

3 processes that occur in implantation

A

Apposition
Adhesion
Invasion

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12
Q

Once implantation has taken place,
endometrium is called ____________

A

Decidua

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13
Q

Divisions of the Decidua

A

deciduas basalis
deciduas capsularies
deciduas vera/parietalis

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14
Q

inner layer which is present as early as 12 days gestation and appears to be
functional early in pregnancy but then disappears between the 20th and 24th
week.

A

Cytotrophoblast/Langhan’s Layer

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15
Q

outer layer containing fingerlike projections called chorionic villi which gives
rise to fetal membranes that arise from the zygote

A

Syncytiotrophoblast/Syncitial Layer

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16
Q

outer membrane, together with deciduas basalis gives rise to
placenta which starts to form at 8th weeks gestational age

A

chorion

17
Q

inner layer which gives rise to umbilical cord/funis and amniotic fluid/ bag of water (BOW)

A

amnion

18
Q

the lifeline that links the embryo/fetus and the placenta

contains 2 umbilical arteries that returns deoxygenated
blood to the placenta and 1 umbilical vein that carries
oxygenated blood to the fetus

A

Umbilical cord/funis

19
Q

amniotic fluid begins to form at ___ to ___ weeks gestation

A

11-15th

20
Q

a pale, clear, straw colored albuminous fluid in which
the baby floats

A

amniotic fluid

21
Q

specific gravity of amniotic fluid

A

1.007 to 1.025

22
Q

ph of BOW

A

7.0 to 7.25

23
Q

near term, is clear, colorless containing little white,
peaks of vernix caseosa and other solid particles

A

BOW

24
Q

BOW is produces at a rate of _______ in 24 hrs and fetus swallows it at an equally rapid rate of ____ ml/24 hrs

A

500 ml, 500

25
Q

by ____ lunar month, _____ is added to the amount of amniotic fluid derive chiefly from maternal serum and
fetal urine

A

4th urine

26
Q

shields the fetus against blows or pressures on the
mother’s abdomen

A

BOW

27
Q

protects the fetus against sudden changes in
temperature since liquid changes temperature more
slowly than air

A

BOW

28
Q

protects the fetus against infections

A

BOW

29
Q

removal of amniotic fluid to diagnose
chromosomal abnormalities

A

Amniocentesis

30
Q

stained amniotic fluid in non-breech
presentation is a sign of fetal distress

A

Meconium

31
Q

Baby’s first poop

A

Meconium

32
Q

arises out of trophoblastic tissues

chorion together with deciduas basalis gives rise to the placenta which starts to form at 8th week gestational age

A

Placentation

33
Q

the placenta develops into ___ to ____ lobes or cotyledons/each functioning unit and each cotyledons are separated by fenestrated septa

A

15-20

34
Q

nutrients pass to the fetus via the placenta by means of ______ through
placental tissues

A

diffusion

35
Q

feto-placental circulation takes place by ___________ via the umbilical
arteries and umbilical vein

A

selective osmosis

36
Q

Waste products are excreted through the ________. It is the mother’s liver
that detoxifies the waste products of the fetus

A

placenta

37
Q

orders the corpus luteum to keep on producing Estrogen and Progesterone that is why there is amenorrhea during pregnancy

A

hCG (Human Chorionic Gonadotropin)

38
Q

promotes growth of the mammary glands necessary for lactation

A

hPL (Human Placental Lactogen)
or hCS (Human Chorionic Somatotrophin)

NCM 107 (11 decks)

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