Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Human Growth and Development and Embryology > 2nd-3rd week of Development > Flashcards

2nd-3rd week of Development Flashcards

1
Q

T or F
The first trimester of pregnancy is the most critical

A

TRUE

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What week does this occur?
Bilaminar Germ Disc
o Focus is the embryoblast
o Bilaminar - embryoblast dividing into two layers

A

2nd Week of Development

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

T or F
In the 8 th day of development the mother already knows shes pregnanat

A

FALSE
Day 8
o Not yet know that mother is pregnant

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Trophoblast Two Layers:

A

Cytotrophoblast
Syncitiotrophoblast

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Embryoblast Two Layers

A

Hypoblast Layer
Epiblast Layer

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q
  • adjacent to amniotic cavity
A

Epiblast Layer

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

adjacent to blastocyst
cavity

A

Hypoblast Layer

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

outer, where cells
from cytotrophoblast migrate and fuse,
arrange and package

A

Syncitiotrophoblast

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

inner, where mitotic
figures are found. Mitosis, this is where your
cells abruptly divide

A

Cytotrophoblast

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

T or F
Epi means above; Hypo means below; Cavity
means space

A

TRUE

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What day does this occur?
Epiblast give rise to amnioblasts that line the
amniotic cavity - it will produce its lining

A

DAY 9

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What day does this occur?
Hypoblast cells will join with the exocoelomic
membrane to produce a lining surrounding the
primitive yolk sac

A

Day 9

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

T or F
Primitive Yolk Sac or Exocoelomic Cavity or
Heuser’s Membrane was the Blastocyst Cavity

A

TRUE

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Day 10 is the

A

Day 10
● The rest day

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

When?
● Chorionic Cavity or Extraembryonic Cavity develops from the Primitive Yolk Sac
● Embryo is completely embedded into the uterus

A

Day 11 and 12

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

When?
Occurrence of bleeding at the implantation site as a result in increased blood flow into the lacunar
spaces

A

DAY 13

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

T or F
Lacunar Spaces are found in the
syncitiotrophoblast

A

TRUe

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What produces cells that proliferate and form
new cavity within primary yolk sac known as
Secondary Yolk Sac

A

Hypoblast

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

T or F
Connecting stalk becomes the pancreatic duct with
blood vessels

A

FALSE
Connecting stalk becomes the umbilical cord with
blood vessels

20
Q

the connection of mother and child occurs

A

Umbilical Chord

21
Q

When?
This is when menstruation starts. Spotting is
mistakenly as menstruation

A

DAY 13

22
Q

spots of blood, only little
amount and the next day it does not occur

A

Spotting

23
Q

95% occurs in Fallopian Tube instead of the
uterus

A

Ectopic Pregnancy

24
Q

Accounts to 9% of pregnancy related deaths due
to Internal Hemorrhage

A

Ectopic Pregnancy

25
Q

T or F
Most ectopic pregnancies dies during the 7th
month, and the mother suffers from heavy
hemorrhaging

A

FALSE
Most ectopic pregnancies dies during the second
month, and the mother suffers from heavy
hemorrhaging

26
Q

When is the Trilaminar Germ Disc present/ highlighted

A

3rd week of development

27
Q

The process that establishes all the three germ
layers

A

Gastrulation

28
Q

From Hypoblast to germ layers - Ectoderm,
Mesoderm, Endoderm

A

Gastrulation

29
Q

Derivatives

A
  1. Endoderm - GIT, Lungs, and Liver
  2. Mesoderm - Muscle, Connective Tissue, and
    Vascular System
  3. Ectoderm - Entire Nervous System
30
Q
  • cells migrating through the mid-streak level
A

Intermediate Mesoderm

31
Q

cells migrate through the caudal part of streak

A

Lateral Mesoderm

32
Q

first cells traveling to the cephalic end, the head

A

Prechordal Plate

33
Q

T or F
The talusus develops into the legs of the baby

A

FALSE
The caudal develops into the legs of the baby

34
Q

eventually becomes the mouth opening

A

Oropharyngeal Membrane

35
Q
  • becomes the opening of the anus
A

Cloacal Membrane

36
Q

Solid cells extending from primitive node to notochordal plate

A

Notochord

37
Q

Any substance that could harm the embryo. In week
three, the mother is not yet sure if she is pregnant

A

Teratogens

38
Q

The mother is prone to Teratogens if the mother is not
living healthy

A

Teratogens

39
Q

Alcohol, caffeine, tobacco, drugs are examples of

A

Teratogens

40
Q

Insufficient caudal mesoderm has resulted in
fusion of the – and birth defects

A

Caudal Dysgenesis or Sirenomelia

41
Q

The differentiation of cells in the Caudal part is
not Completed

A

Caudal Dysgenesis or Sirenomelia

42
Q

Genetic defect that caused transposition of the
viscera in the thorax and abdomen

A

Situs Inversus

43
Q

Occur when cells of the primitive streak get left
behind in the sacrococcygeal region, and these
cells develop into tumors attached to its but and
feet

A

Sacrococcygeal Teratoma

44
Q

More common in female fetuses
o The baby is not getting all the nutrients

A

Sacrococcygeal Teratoma

45
Q
A

Human Growth and Development and Embryology (17 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions