Embryology

Question 1

Telomerase

Answer 1

is a Reverse Transcriptase that synthesises Telomeres

Question 2

Senesence

Answer 2

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

Question 3

Telomeres

Answer 3

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

Question 4

Journey of Sperm

Answer 4

SEVEN UP
Seminiferous tubules
Epididymus
Vas Deferens
Ejaculation
------
Urethra
Penis

Question 5

3 germ layers what stage of embryogensis is this?

Answer 5

Gastrula

Question 6

ICM

Answer 6

fetus

Question 7

Trophoblasts

Answer 7

placenta

Question 8

ICM and Tropho form what stage of embryogenesis

Answer 8

Blastula

Question 9

Totipotency

Answer 9

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

Question 10

Pluripotent

Answer 10

Any cell type (primary germ) except placental

Question 11

Multipotent

Answer 11

any cell type within particular lineage i.e hematopoietic

Question 12

Ectoderm germ layer makes

Answer 12

ATTRACTO-DERM

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

Question 13

Meso

Answer 13

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

Question 14

Endo

Answer 14

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

Question 15

Dizygotic

Answer 15

2 eggs 2 sperm

non identical cells

Question 16

Monozygotic

Answer 16

zygote splits

IDENTICAL DNA

Question 17

solid ball of mass cells

Answer 17

Morula

Question 18

Determination

Answer 18

committed to cell lineage

Question 19

Differentiation

Answer 19

committed to cell type i.e RBC

Question 20

Paracrine

Answer 20

local signal

Question 21

Autocrine

Answer 21

self signal

Question 22

Juxtacrine

Answer 22

neighbor signal

Question 23

Endocrine

Answer 23

Far away signal; hormones carry out this func

Question 24

Primary oocyte arrested in

Answer 24

Prophase I

Question 25

Secondary oocyte arrested in

Answer 25

Metaphase II

Question 26

What allows 1 oocyte to complete Meiosis I?

Answer 26

Menses

Question 27

What allows 2ndary oocyte to complete Meiosis II?

Answer 27

Fertilization

Question 28

fetal hemoglobin contains ____ affinity for mothers oxygen

Answer 28

high

Question 29

Is the placenta considered an organ?

Answer 29

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

Question 30

oxygenation of fetus occurs at the lungs or placenta?

Answer 30

placenta

Question 31

umbilical arteries carry deoxy/oxy blood?

Answer 31

deoxy

Question 32

umbilical veins carry deoxy/oxy blood?

Answer 32

oxy

Question 33

This shunt connects R atrium to L atrium

Answer 33

foramen ovale

Question 34

This shunt connects pulmonary artery to aorta

Answer 34

ductus arteriosus

Question 35

This shunt connects connects umbilical vein to inferior vena cava

Answer 35

ductus venosus