Oogenesis

Question 1

define

Answer 1

oogonia are transformed to mature oocytes

Question 2

when

Answer 2

initiates before birth

Question 3

permanent cessation of menstrual cycle

Answer 3

menopause

Question 4

before birth

Answer 4

prenatal maturation of oocytes

Question 5

steps in prenatal maturation

Answer 5

enlargement of oogonia
formation of primary spermatocyte
flattened follicular cells around it
zona pellucida forms

Question 6

acellular, amorphous, glycoprotein coat around oocyte

Answer 6

zona pellucida

Question 7

flattened follicular connective tissue cells

Answer 7

corona radiata

Question 8

the follicle formed

Answer 8

primordial follicle

Question 9

primary oocyte arrested in which phase

Answer 9

dictyotene of prophase

Question 10

substance secreted by follicular cells to arrest the meiosis until puberty, remain dormant

Answer 10

oocyte maturation inhibitor

Question 11

after birth

Answer 11

postnatal maturation at puberty

Question 12

amount of follicle maturing each month

Answer 12

1

Question 13

released at

Answer 13

ovulation

Question 14

dictyotene

Answer 14

prolonged resting phase in oogenesis

Question 15

division

Answer 15

complete meiosis 1

Question 16

formation of

Answer 16

secondary oocyte and 1st polar body

Question 17

division of cytoplasm

Answer 17

unequal

Question 18

when meiosis 2?

Answer 18

at ovulation

Question 19

arrested at

Answer 19

metaphase 2

Question 20

resume the division

Answer 20

if penetrated by the sperm

Question 21

what is it called after completion of meiosis 2?

Answer 21

mature oocyte

Question 22

number of oocytes in neonate?

Answer 22

2 million

Question 23

number of oocytes until puberty

Answer 23

40,000

Question 24

number of secondary oocytes formed

Answer 24

400

Question 25

what can reduce the number of oocytes ovulated?

Answer 25

contraceptives

Question 26

function of contraceptives

Answer 26

prevention of maturation of oocytes