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pka > Embryology > Flashcards

Embryology Flashcards

1
Q

Telomerase

A

is a Reverse Transcriptase that synthesises Telomeres

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2
Q

Senesence

A

biological aging. After 50 divisions cell no longer able to divide

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3
Q

Telomeres

A

High G & C content. Prevent DNA from being lost.

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4
Q

Journey of Sperm

A 
SEVEN UP
Seminiferous tubules
Epididymus
Vas Deferens
Ejaculation
------
Urethra
Penis
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5
Q

3 germ layers what stage of embryogensis is this?

A

Gastrula

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6
Q

ICM

A

fetus

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7
Q

Trophoblasts

A

placenta

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8
Q

ICM and Tropho form what stage of embryogenesis

A

Blastula

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9
Q

Totipotency

A

All cell type of developing embryo (primary germ layers) or placental structures (amnion, chorion, placenta).

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10
Q

Pluripotent

A

Any cell type (primary germ) except placental

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11
Q

Multipotent

A

any cell type within particular lineage i.e hematopoietic

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12
Q

Ectoderm germ layer makes

A

ATTRACTO-DERM

epidermis, hair, nails, epithelium of nose, mouth anal canal, lens of eye, NS (Adrenal Medulla), and inner ear.

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13
Q

Meso

A

MEANS TO MOVE
musculoskeletal system, circulatory sys, excretory sys, gonads, muscular and connective tissue layers and digestive tissue layers, Adrenal Cortex

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14
Q

Endo

A

Epithelial lining of digestive tract, e.l respiratory tract, part of the liver, pancreas, thyroid, distral urinary tract, respiratory tract.

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15
Q

Dizygotic

A

2 eggs 2 sperm

non identical cells

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16
Q

Monozygotic

A

zygote splits

IDENTICAL DNA

17
Q

solid ball of mass cells

A

Morula

18
Q

Determination

A

committed to cell lineage

19
Q

Differentiation

A

committed to cell type i.e RBC

20
Q

Paracrine

A

local signal

21
Q

Autocrine

A

self signal

22
Q

Juxtacrine

A

neighbor signal

23
Q

Endocrine

A

Far away signal; hormones carry out this func

24
Q

Primary oocyte arrested in

A

Prophase I

25
Q

Secondary oocyte arrested in

A

Metaphase II

26
Q

What allows 1 oocyte to complete Meiosis I?

A

Menses

27
Q

What allows 2ndary oocyte to complete Meiosis II?

A

Fertilization

28
Q

fetal hemoglobin contains ____ affinity for mothers oxygen

A

high

29
Q

Is the placenta considered an organ?

A

YES; it produces progesterone, estrogen, hCG which is essential for maintaining pregnancy

30
Q

oxygenation of fetus occurs at the lungs or placenta?

A

placenta

31
Q

umbilical arteries carry deoxy/oxy blood?

A

deoxy

32
Q

umbilical veins carry deoxy/oxy blood?

A

oxy

33
Q

This shunt connects R atrium to L atrium

A

foramen ovale

34
Q

This shunt connects pulmonary artery to aorta

A

ductus arteriosus

35
Q

This shunt connects connects umbilical vein to inferior vena cava

A

ductus venosus

pka (14 decks)

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