Fertilization and Implantation

Question 1

where does fertilization take place

Answer 1

ampullary region of the fallopian tube.

Question 2

what happens during fertilization(initially)

Answer 2

sperms come in contact with the zona pellucida of the ovum and induces change to prevent entry of more sperms.

Question 3

function of acrosome in fetrilization

Answer 3

secretions help in the sperm entering the cytoplasm of the ovum.(induces second meiotic division of secondary oocyte)

Question 4

what happens at the end of second meiotic division

Answer 4

ovum(ootid) and second polar body anf fertilization takes place to form zygote with sperm.

Question 5

what happens after zygote is formed

Answer 5

goes to isthmus and divides mitotically.

Question 6

cleavage

Answer 6

cell divisions as the zygote moves across the oviduct.

Question 7

blastomeres

Answer 7

formed at the end of mitosis(2,4,8,16 daughter cells)

Question 8

morula

Answer 8

mass of cells or embryo with 8 to 16 blastomeres.

Question 9

blastocyst

Answer 9

formed by division of morula

Question 10

trophoblast

Answer 10

the blastomeres in the blastocyst are arranged into an outer layer called trophoblast and inner cells attached to the trophoblast called inner cell mass.

Question 11

what happens after trophoblast is formed?

Answer 11

the trophoblast gets attached tp the endometrium and the inner cell mass gets differentiated and becomes embedded(implantation).