Advertisements
Advertisements
Question
Explain the concept of IVF.
Advertisements
Solution
-
It is also known as in-vitro fertilization.
-
In this process, sperm is collected from the father or any male donor and similarly, an ovum is collected from the mother or any female donor, then this is fertilized in the laboratory using sterilizing conditions.
-
Now when the embryo is formed, it is transferred to the mother or the surrogate.
-
Embryo up to 8 blastomere stage is transferred in the fallopian tube whereas blastomere more than 8 blastomeres is transferred in the uterus.
-
The process is carried out in a laboratory along with high precision and a sterilized environment and these methods are a part of Assisted Reproductive Technology(ART).
-
Though these processes are difficult and high precision should be maintained they have many helped many couples who were unable to conceive.
APPEARS IN
RELATED QUESTIONS
Which part of the human body produces Ova?
Complete the paragraph with the help of words given in the bracket.
(Luteinizing hormone, endometrium of uterus, follicle stimulating hormone, estrogen, progesterone, corpus luteum)
Growth of follicles present in the ovary occurs under the effect of ____________. This follicle secretes estrogen. _____________ grows/regenerates under the effect of estrogen. Under the effect of ___________, fully grown up follicle bursts, ovulation occurs and _______________ is formed from remaining part of follicle. It secrets ____________ and __________. Under the effect of these hormones, glands of ____________ are activated and it becomes ready for implantation.
Name two hormones secreted by ovary of female reproductive system.
After puberty human female shows cyclic changes in her reproductive system. Explain structural and hormonal changes in the uterus.
(OR)
Give reasons :
(1) Scrotal sac serves as thermoregulator.
(2) Corpus luteum gets converted into corpus albicans in absence of fertilization.
(3) Missing of menses is the first indication of pregnancy.
(4) Surgical sterilization is a permanent method of birth control. (5) Human egg is microlecithal.
Name the following:
The parts of the ovary containing mature ovum.
The below diagram represents the sectional view of the female reproductive organs of a mammal.
(i) Label the parts numbered 1 to 7.
(ii) What are the main functions of the parts labeled 2, 5, 6?
State names of organs in the female reproductive system.
Complete the table.
| Sex/Gender | Reasons of infertility |
| Female | |
| Male |
What is true of gametes?
How many lobes are generally present in each mammary gland?
Which of the following is a permanent method of contraception in a human female?
A sac shaped like an upside down pear with a thick lining and muscles in the pelvic area where a fertilized egg or zygote comes to grow into a baby is called ______.
The opening of the vagina is often covered partially by a membrane called ______.
The fertilization of the human egg by the sperm takes place in ______
Read the following and answer from given below:
Oogenesis is the process of the formation of an ovum in the ovaries. It consists of three phases: multiplication, growth, and maturation. Oogenesis is controlled by hormones GnRH, LH, FSH. GnRH secreted by the hypothalamus stimulates the anterior lobe of the pituitary gland to secrete LH and FSH.
Identify the functions of LH.
- Release of a secondary oocyte from Graafian follicle.
- Stimulates corpus luteum to secrete progesterone.
- Stimulates estrogen formation.
- Promotes development of egg to form secondary oocyte.
______ receives the sperms and acts as a birth canal during childbirth.
Draw a neat diagram of the female reproductive system and label the parts associated with the following:
(a) production of gamete
(b) site of fertilisation
(c) site of implantation
(d) birth canal
Define the following term:
Hymen
Statement I: The presence or absence of hymen is not a reliable indicator of virginity.
Statement II: The hymen is torn during the first coitus only.
In the light of the above statements, choose the correct answer from the options given below:
