Test 2 BT's Version A

Question 1

1. Trisomy 21 causes:

Answer 1

Down syndrome

Question 2

2. Among extraembryonic membranes as the first one c…

Answer 2

Right answer -> Chorion (outermost Layer)

Yolk sac

Allantois

Amnion- (innermost layer)

Question 3

3. In the notochord formation, the neuroenteric canal …

Answer 3

Is the transition between the amniotic and yolk sac cavities.

Question 4

4. Achondroplasia is inherited as:

Answer 4

Autosomal dominant trait

Question 5

5. Cell migration and differentiation in the process

Answer 5

FGF8

Question 6

6. Somites develop from:

Answer 6

Paraxial mesoderm

Question 7

7. Tetrasomy 48, XXXY causes:

Answer 7

Klinefelter syndrome

Question 8

8. All of the foregut endoderm has the potential to exp… differentiate into the liver tissue, but this expression is i… surrounding tissues. The action of these inhibitors is blocked by:

Answer 8

Hepatocyte nuclear transcription factors (HNF3 and 4)

Question 9

9. Is the kidney development the process of branching and gro.. stimulated by:

Answer 9

GDNF

Question 10

10. A critical role in regulating HOX genes expressions is brain dev…

Answer 10

Retinoic acid

Question 11

11. Indicate the transcription factor specifying the duodenum

Answer 11

PDX1

Question 12

12. Development of the hypothalamus is regulated by:

Answer 12

DAX1

Question 13

13. Mesoderm will be ventralized to contribute to kidneys, b.. the presence of:

Answer 13

BMP4

Question 14

14. The enamel of the teeth develops from:

Answer 14

Ectoderm

Question 15

15. Listed below cells are neural crest derivation, expect:

Answer 15

Hepalocytes

Question 16

16. Indicate the repressor for left-sided gene expression o…

Answer 16

SSH

Question 17

18. A group of anomalies occurring together that have… called:

Answer 17

Syndrome

Question 18

19. Indicate natural inhibitors of heart development:

Answer 18

NKX25

Question 19

20. In the diagram are shown changes in the hormone.. menstrual cycle. This hormone is:

Answer 19

Estragiol is highest before ovulation, in the follecular phase

Progestorone is highest in luteal phase which is after ovulation

LH is highest in ovulation while SFH is lowest

Question 20

23. Indicate a primary brain vesicle

Answer 20

Prosencephalon

Question 21

24. In the scheme of primary ovary follicle with the arrow indicated

Answer 21

Theca externa

Question 22

25. Dorsal/ventral pattering of the neural tube is controlled by:

Answer 22

BMP4 and 7

Question 23

26. In the process of somite differentiation expression of the muscle specific.. induced by:

Answer 23

FGF

Question 24

27. Taking into consideration chemical structure of estrogens you count… among:

Answer 24

Steroids

Question 25

28. Marfan syndrome is caused by mutations in the gene encoding:

Answer 25

Fibryllin (FBN1)

Question 26

29. Indicate the gene important for designating the forebrain and midbrain.

Answer 26

OTX2

Question 27

30. Tetralogy of Fallot is caused by mutations in the gene:

Answer 27

NKX25