Introduction To Embryology And Gametogenesis

Question 1

The process where one diploid germ cell divides to create either 1 or 4 haploid cell is known as

Answer 1

Meiosis

Question 2

Genetic diversity is produces as a result of

Answer 2

Crossing over

Question 3

Which hormone induces the proliferation of the follicular cells in females

Answer 3

FSH

Question 4

Spermatids are gradually transformed into mature sperms by a process known as

Answer 4

Spermiogenesis

Question 5

At the time of ovulation the oocyte enters which of the following stages of second meitoic division ?

Answer 5

Metaphase

Question 6

A process of sperm conditioning in which glycoproteins and seminal proteins are removed from the sperm acrosomal surface.

Answer 6

Acrosomal reaction

Question 7

One spermatogonium after undergoing spermatogenesis gives rises to ……. Sperms

Answer 7

4

Question 8

The developing individual is referred as an embryo during

Answer 8

The first 8 weeks

Question 9

Who was the first test tube baby?

Answer 9

Louise brown

Question 10

Two features seen in a secondary oocyte in the metaphase stage of second meitoic division.

Answer 10

Theca interna and theca externa

Question 11

Approx one and a half days before the midpoint of menstrual cycle in females which hormone is secreted?

Answer 11

LH

Question 12

The dominant follicle in one of the two ovaries reaches a diameter of up to 25mm and is known as

Answer 12

Graffian follicle

Question 13

The largest cell nuclei in the germinal epithelium is possessed by

Answer 13

Primary spermatocytes

Question 14

What is the human embryo called at beginning of development ?

Answer 14

Zygote

Question 15

Conceptus

Answer 15

Is used when referring to an embryo and is extra embryonic membranes

Question 16

Totipotent

Answer 16

The ability of a single cell to divide and produce all the differentiated cells in an organism

Question 17

Trimester

Answer 17

A period of 3 onths

Question 18

Abortion

Answer 18

A premature stoppage of development and expulsion of the conceptus from uterus or expulsion of embryo or fetus before it is viable capable of living outside the uterus .

Question 19

Pre embryonic

Answer 19

First 2 weeks includes cleavage, implantation

Question 20

Embryonic period

Answer 20

3rd to 8th week

Question 21

Fetal

Answer 21

3rd to 9 th week

Question 22

Perinatal

Answer 22

22 weeks to birth

Question 23

First test tube baby

Answer 23

Louise brown

Question 24

Gametes

Answer 24

Haploid reproductive cells e.g sperm ovum

Question 25

Meiosis

Answer 25

Process by which one diploid germ cell divides in order to create either 1 or 4 haploid cells.

Question 26

Spermatogenesis

Answer 26

The sequence of events by which spermatogonia are transformed into mature sperm in the seminiferous tubules of testis.

Question 27

Primary spermatocytes

Answer 27

Diploid cells resulting from differentiation of type b spermatogonia they enter meiosis 1

Question 28

Secondary spermatocytes

Answer 28

Haploid cells resulting from meiosis 1 during spermatogenesis

Question 29

Spermeogenesis

Answer 29

Differentiation of spermatids to spermatozoa. It includes the addition of an acrosome with enzymes and a flagellum for locomotion at the tail region.

Question 30

Four events in spermeogeneis

Answer 30

Reduction in nuclear size
Loss of cytoplasm
Condensation of Golgi
Spiral arrangement of mitochondria

Question 31

The cycle of spermatogonia last

Answer 31

64 days

Question 32

The secondary spermatocytes enter which cell division

Answer 32

Meiosis 2