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Anatomy 1001 > Embryology > Flashcards

Embryology Flashcards

1
Q

What is mitosis

A

Somatic cell division of a diploid cell

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2
Q

What is the point of mitosis

A

Replace dead and injured cells with the production of two identical cells

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3
Q

What is meiosis

A

Reproductive cell division of haploid cells

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4
Q

What is fertilisation

A

Fusion of male and female gametes

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5
Q

How long is sperm viable for

A

48 hrs

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6
Q

What is a fertilised ovum called

A

Zygote

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7
Q

What is a morula

A

Mass of 16-32 blastineres

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8
Q

What does the placenta provide

A

Gas, nutrients, waste products

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9
Q

What does the trophoblast differentiate into

A

Syncytiotrophoblast
Cytotrophoblast

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10
Q

Trilaminar embryonic discs for what three primary germ layers

A

Ectoderm
Mesoderm
Endoderm

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11
Q

What do ecotoderm cells do when the neural fold turns into the neural tube

A

Develop into the brain and spinal cord

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12
Q

Mesoderms develop into

A

Somites

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13
Q

Each Semite consists of

A

Myotome
Dermatome
Sclerotome

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14
Q

What does myotomes develop into

A

Skeletal muscles of the neck,trunk,limbs

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15
Q

Dermatomes form

A

Connective tissue, dermis of the skin

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16
Q

Sclerotomes form

A

Vertebrae and ribs

17
Q

How many pharyngeal develop In the head and neck region

A

5 pairs

18
Q

Pharyngeal is a developmental unit and gives rise to

A

Skeletal muscles, nerves and blood vessels

19
Q

Blastocyst

A

Appearance of cavity between blastomeres

20
Q

Timing of the embryo

A

From the 6th day after fertilisation to the end of the 8th week

21
Q

Timing of the foetus

A

9th week to the end of development 40th week

22
Q

Timing of the neonatal period

A

First 28 days after birth

23
Q

Endoderm

A

Lining of the gastrointestinal tract,urinary bladder, gallbladder and liver

Anatomy 1001 (19 decks)

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