Fertilization

Question 1

Site of Fertilization

Answer 1

Ampulla of FT

Question 2

Membrane which prevents polyspermy, Implantation.

Answer 2

Zona pellucida

Question 3

Stages of Fertilization.

Answer 3

Capacitation - Acrosomal Reaction - Cortical Reaction - Zonal Reaction.

Question 4

Zygote is formed by

Answer 4

Fusion of male and female pronucleus

Question 5

Stages of implantation

Answer 5

Zygote to 2 cell to 4 cell to 8 cell - compaction - differentiation - Cavitation, Hatching - implantation

Question 6

Compaction -

Answer 6

loosely arranged blastomeres held together by tight junctions

Question 7

loosely arranged blastomeres held together by tight junctions

Answer 7

Compaction

Question 8

8 cell to 16 cell is by

Answer 8

Differentiation.

Question 9

16 cell stage is called

Answer 9

Morula

Question 10

Morula is

Answer 10

16 cell stage

Question 11

Formation of blastocyst is by

Answer 11

Cavitation

Question 12

Cavitation

Answer 12

Formation of blastocyst from morula

Question 13

Zygote is formed

Answer 13

12-24 hrs after fertilization

Question 14

2 cell stage is formed ..

Answer 14

24 hrs after fertilization.

Question 15

morula is formed

Answer 15

3 days after fertilization

Question 16

Advanced morula - 32 cell stage is formed

Answer 16

4 days after fertilization.

Question 17

Implantation occurs

Answer 17

6-7 days after fetililzation.

Question 18

number of cells in blastocyst

Answer 18

58
53 - outer cell mass
5 - inner cell mass.

Question 19

Outer cell mass forms -

Answer 19

Trophoblast

Question 20

Inner cell mass gives rise to -

Answer 20

Embryoblast, Embryo proper.

Question 21

_____ enters uterine cavity for implantation.

Answer 21

Advanced morula

Question 22

Zona pellucida disappears _______

Answer 22

5 days after fertilization.

Question 23

Site of implantation

Answer 23

Functional layer of endometrium.

Question 24

When does fertilization occur

Answer 24

12-24 hrs after ovulation.