How tissues are made from cells Pt1 L9 Flashcards

1
Q

what is a fertilised egg called

A

zygote

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2
Q

what is a zygote made off

A

1 cell 2 pronuclei

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3
Q

what is cleavage

A

one cell splits to form 2 which splits to form 4

No cell growth, replicates nuclear material

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4
Q

where does cleavage happen

A

fallopian tubes

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5
Q

what is a morula

A

16-32 cells, can no longer see individual cells

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6
Q

on what day does a morula form

A

day 3

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7
Q

what does a morula become

A

a blastocyst

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8
Q

where does a blastocyst move

A

into the uterus

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9
Q

what does a blastocyst start to do

A

differentiate
protein synthesis
true growth

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10
Q

what forms around the outer ridge of the blastocyst

A

trophoblasts (TE)

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11
Q

what forms on the inside of the blastocyst

A

inner cell mast

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12
Q

what are the inner cell masts differentiation properties

A

pluripotent- any cell in the body apart from trophoblasts

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13
Q

what are the two types of inner cell mast cells

A

hypoblasts and epiblasts

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14
Q

what is the cavity formed in the blastocyst

A

blastocoel cavity

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15
Q

Epiblasts become —–>

A

ectoderm

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16
Q

hypoblasts become—->

A

endoderm

17
Q

what cavity is formed from ectoderm

A

amniotic cavity

18
Q

what cavity is formed from endoderm

A

yolk sac

19
Q

what is mesoderm formed from

A

epiblast

20
Q

where do mesoderm migrate through

A

the primitive streak

21
Q

trilaminar disc=

A

ectoderm
mesoderm
endoderm

22
Q

what forms the epithelial lining of the skin

A

ectoderm

23
Q

what forms the nervous system

A

ectoderm

24
Q

what forms teeth and enamel

A

ectoderm

25
Q

3 things mesoderm forms

A

muscular system
notochord
skeletal system

26
Q

what forms the epithelial lining of the digestive tract and respiratory system

A

endoderm

27
Q

what day does the bilaminar disc form

A

day 9

28
Q

what day does the trilaminar disc form

A

10-16