conception, implantation and placentation

Question 1

Small follicle or type 1, 2, 3 (25 cells) less than 50 μ

Answer 1

primordial follicle

Question 2

Preantral follicle or type 4 (26-100 cells)
type 5 (101-300 cells) up to 200 μ

Answer 2

primary follicle

Question 3

Small antral type 6 (301-500 cells), 500 μ

Answer 3

secondary follicle

Question 4

Large antral type 7 (501-1000 cells) 1000-6000 μ

Answer 4

Tertiary follicle

Question 5

Large antral type 8 (>1000 cells) greater than 6000 μ

Answer 5

preovulatory- graaffian follicle

Question 6

formation of follicles

Answer 6

at 20 weeks of fetal life

Question 7

Tonic growth phase
Occurs independent of LH / FSH
During oral contraceptive use
During pregnancy
Class 1 to Class 4 follicles

Answer 7

GnH independent phase

Question 8

Requires LH / FSH

Class 5 to Class 8 follicles

Answer 8

GnH dependent phase

Question 9

The development of a primordial follicle to a preovulatory follicle takes in excess of ____ days.

Answer 9

120

Question 10

The meiosis of oocytes is arrested at __________ of the first meiotic division. Meiotic division is completed just prior to ovulation, and in humans this arrest can be 50 years long

Answer 10

prophase I

Question 11

binding protein of sperm to zona pellucida

Answer 11

ZP3

Question 12

endometrium stromal cells are transformed by steroid hormones into the

Answer 12

decidua which allows implantation

Question 13

Lasts about 4 days.
Occurs around 6-10 days after the LH peak
Day 20-23 after LMP

Answer 13

implantation window

Question 14

decidual changes is a mark of a __________

Expansion of above
Cells fill with lipid and glycogen
Polyhedral shape

Answer 14

pregnancy

Question 15

Glands of spongiosa secrete and form unequal areas of hypersecretion

Answer 15

Arias-Stella phenomenon

Question 16

why is there epigenetic silencing of chemokine expression in the decidual stoma cells

Answer 16

it kills the maternal immune cells thus immune system is blunted

Question 17

what anchors the placenta to the wall?

Answer 17

anchoring villa