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BIOLOGY > GROWTH AND DEVELOPMENT - ONTOGENY > Flashcards

GROWTH AND DEVELOPMENT - ONTOGENY Flashcards

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1
Q

Day 1 of ontogeny

A

Ontogeny starts when sperm cell meets the egg cell, titigas yung plasma membrane ng egg cell so that wala na makapasok na ibang sperm cell

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2
Q

Union of egg cell and sperm cell

A

Fertilization (forms zygote)

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3
Q

Day 2 of ontogeny

A

Magkakaroon ng cell division or cleavage formation from 1 cell to 32 cells

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4
Q

Day 3

A

Compaction of cell, magdidikit dikit yung cells

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5
Q

Day 4

A

Differentiation of cells, magkakaroon ng 2 population of cells one is the trophoblast yung labas then embryoblast yung loob

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6
Q

Day 5

A

Blastulation , magkakaroon ng cavity which is call blastocoele tapos gigilid yung embryoblast (inner mass cell)

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7
Q

Day 6

A

Matatanggal zona pellucida mas magiging stickier ung blastocyst

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8
Q

Day 7

A

Implant of blastocyst sa uterus

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9
Q

Day 9

A

Magkakaroon ulit ng differentiation, dun na yung epiblast, hypoblast, and trophoblast

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10
Q

Day 12

A

Dun na makacuut yung melon so magkahiwalay na epiblast and hypoblast (bilaminar disc)

Tapos magkakaroon ng primitive streak then dun na mabubuo ectoderm, mesoderm, endoderm

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11
Q

Day 18

A

Lalaki yung mesoderm, yung ectoderm andun yung amniotic sac, endoderm andun yung yolk sac

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12
Q

Day 23

A

Amniotic sac enlargement

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13
Q

What are the three germ layers

A

Ectoderm, mesoderm, endoderm

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14
Q

Ectoderm give rises to?

A 
CNS
PNS
Sensory of eye, ears, and nose4+
Epidermis
Mammary Glands
Pituitary Glands (hypophysis)
Subcutaneous glands
Enamel of the teeth
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15
Q

Mesoderm give rises to?

A 
Connective tissue
Cartilage
Bone
Smooth and striated muscle
Heart walls, blood, lymph vessels
Kidney, gonads, genital duct
Lining of body cavities
Spleen
Adrenal Glands
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16
Q

Endoderm give rises to?

A

Epithelial lining of GI tract and respiratory tract
Epithelial lining of urethra and urinal bladder
Epithelial lining of tympanic shits, ears
Tonsillar parenchyma !!!!!!!!!!!!!!!!!! REMEMBER
Liver, thymus, thyroid, parathyroid and pancreas

BIOLOGY (6 decks)

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