Phisiology

Question 1

Until ovulation, oocytes are arrested in which phase

Answer 1

Prophase 1

Question 2

Until fertilization, secondary oocytes are arrested in which phase

Answer 2

Metaphase 2

Question 3

Follicular cell that produces androgen

Answer 3

Theca cells

Question 4

Hormone that stimulates secretion of FSH and LH at time of ovulation

Answer 4

High levels of estrogen

Question 5

When is the blastocyst formed

Answer 5

Day 5 after fertilization

Question 6

How long after fertilization can beta-hCG be detected in blood

Answer 6

6 days

Question 7

How long after fertilization can beta-hCG be detected in urine

Answer 7

2 weeks

Question 8

Day at which cleavage of the zygote takes place to produce dichorionic diamniotic twins

Answer 8

Days 0 to 4

Question 9

Day at which cleavage of the zygote takes place to produce monochorionic diamniotic twins

Answer 9

Days 4 to 8 (morula stage)

Question 10

Day at which cleavage of the zygote takes place to produce monochorionic monoamniotic twins

Answer 10

Days 8 to 12 (blastocyst stage)

Question 11

Conjoined twins develop due to cleavage at which developmental date

Answer 11

Around 2 weeks

Question 12

Most common chorionicity and amnionicity seen in twins

Answer 12

Monochorionic diamniotic

Question 13

When can chorionic villi sampling be performed safely

Answer 13

10 to 14 weeks gestation

Question 14

Important immunological protein that is absent in the syncytiotrophoblast

Answer 14

MHC-I

Question 15

Derivatives of the 4th aortic arch

Answer 15

• Left: aortic arch

* Right: proximal part of right subclavian

Question 16

Derivatives of the 6th aortic arch

Answer 16

• Proximal part of the pulmonary arteries

* Ductus arteriosus

Question 17

Cell of the seminiferous tubules that has aromatase

Answer 17

Sertoli cells

Question 18

First haploid cell in spermatogenesis

Answer 18

Secondary spermatocyte