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General Microscopic Anatomy and Embryology > Embryogenesis > Flashcards

Embryogenesis Flashcards

1
Q

the development during the first eight weeks after fertilization

A

EMBRYOGENESIS

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2
Q

What are the stages in Early Embryogenesis (1st to 4th week)

A

Germinal Stage
Gastrulation
Neurulation

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3
Q

What are the stages in Late Embryogenesis (5th to 8th week)

A

Organogenesis

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4
Q

What are parts of egg cell?

A

Corona radiata
Zona pellucida
Follicular/Granulosa Cell

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5
Q

What are the parts of sperm cell?

A

Tail
Midpiece
Head

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6
Q

Location of mitchondria in Sperm Cell

A

Mitochondria = Midpiece

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7
Q

What do you call the enzyme found in sperm cell?

A

Acrosome

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8
Q

Sperm cell + Egg cell = ?

A

Zygote

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9
Q

What are the stages in germinal stage?

A
  1. Fertilization
  2. Cleavage
  3. Blastulation
  4. Implantation
  5. Embryonic disc formation
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10
Q

Stage where it is resulting to a zygote
(single diploid cell)

A

Fertilization

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11
Q

Movement of cell or bacterium

A

Chemotaxis

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12
Q

What are the processes in fertilization?

A

Chemotaxis

AH ZIGE PA CONTI NA LANG
- Acrosomal reaction
- Zona reaction
- Cortical reaction

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13
Q

What process does follicular/granulosa will release its granules?

A

Cortical Reaction

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14
Q

What is the cell type and cell number of a zygote?

A

Single cell
Single Type

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15
Q

slow process of cell division (about 12 to 24 hrs for each division)

A

Cleavage

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16
Q

dividing cells that are still enclosed by zona pellucida

A

Blastomeres

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17
Q

16 to 32 blastomeres

A

Morula

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18
Q

Blastopheres start to bind firmly together (Compaction)

A

Morula

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19
Q

What is cell type and cell number of Morula?

A

Multicellular
Monotype

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20
Q

Process of forming blastocyst

A

Blastulation

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21
Q

What are the processes under Blastulation?

A

Differentiation
Cavitation
Blastocyst increase in size

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22
Q

Outer layer cells in blastulation

A

Trophoblast

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23
Q

Outer layer cells in blastulation

A

Trophoblast

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24
Q

Inner layer cells in blasulation

A

Embryoblast

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25
Process where embryoblast polarize at one end resulting to a blastocele
Cavitation
26
Process where embryoblast polarize at one end resulting to a blastocele
Cavitation
27
What type of cell does blastula has?
Bi-type of cell
28
What type of cell does blastula has?
Bi-type of cell
29
What cell is for future placenta?
Trophoblast
30
What do you call the cavity in Blastula?
Blastocoel/Blastocele
31
What do you call the cavity in Blastula?
Blastocoel/Blastocele
32
Stage where trophoblast implants the blastocyst in the decidual epithelium (lining of uterus)
Implantation (nidation)
33
Other term for implantation
Nidation
34
Site of fertilization
Ampulla of Fallopian tube
35
Production of Human Chorionic Gonatrophin will result in?
Increase in progesterone
36
Increase in progesterone during implantation will result in?
Thickening of lining of blood vessel
37
It is responsible for nutrient and gas exchange in the human placenta. It also forms when human embryonic stem cells (ESCs) differentiate to trophoblast.
syncytiotrophoblast
38
Are the least differentiated trophoblastic cells and are the progenitors of syncytiotrophoblasts
Cytotrophoblasts
39
How many cells are there during Embryonic Disc Formation?
4 cells. Trophoblast Epiblast Hypoblast
40
How many cells are there during Embryonic Disc Formation?
4 cells. Trophoblast Epiblast Hypoblast
41
two-layered structure
bilaminar embryonic disc
42
involves the movement of epiblast cells and results in the formation of three distinct germ layers that eventually give rise to the many body structures.
Gastrulation Stage
43
re-organizes the 2-layer embryo (bilaminar disc) into a 3-layer embryo (trilaminar disc)
Gastrulation Stage
44
a 3-layer embryo
(trilaminar disc)
45
thickened line formed by proliferating cells of the epiblast that migrate toward the center and the caudal end of the disk
Primitive Streak
46
Stage where the ectoderm gives rise to epithelial and neural tissue
Neurulation Stage
47
refers to this folding process whereby the neural plate is transformed into the neural tube, and this takes place during the fourth week.
Neurulation Stage
48
Stage where mesoderm are spreading and there is amniotic sac enlargement
Neurulation Stage
49
Stage where mesoderm are spreading and there is amniotic sac enlargement
Neurulation Stage
50
Neural plate will become?
Nervous System
51
Notochord will become?
Vertebrae
52
Neural crest will become?
PNS
53
Neural tube will become?
CNS
54
Which derm outermost layer of skin originated?
Ectoderm
55
What derm Central and peripheral nervous system originated?
Ectoderm
56
Which derm does eyes, inner ears originated?
Ectoderm
57
Which derm does eyes, inner ears originated?
Ectoderm
58
Which derm does facial bones, tooth enamel originated?
Ectoderm
59
What derm does heart and circulatory system originated?
Mesoderm
60
What derm does bones (except facial), muscles, kidneys originated?
Mesoderm
61
What derm does lungs, intestine, liver, pancreas, urinary bladder originated?
Endoderm
62
Which derm does kidney originated?
Mesoderm
63
Where does respiratory tract, GI tract, and urinary tract originated?
Endoderm
64
Which derm does facial bones originated?
Ectoderm

General Microscopic Anatomy and Embryology (6 decks)

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