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प्रश्न
Describe the development of a fertilized ovum upto implantation.
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उत्तर
Development of fertilized ovum upto implantation:
Fertilisation results in the formation of a diploid zygote. The zygote formed after fertilization undergoes mitosis. Mitosis takes place in the isthmus of the oviduct or the fallopian tube. This process is known as cleavage. The cleavage results in the formation of 2, 4, 8, 16 daughter cells that are called blastomeres. The 8−16 blastomeres is called a morula, which continues to divide to form the blastocyst. The morula moves further into the uterus. The cells in the blastocyst are arranged into an outer trophoblast and an inner cell mass. The trophoblast gets attached to the uterine endometrium, and the process is called implantation. This leads to pregnancy.
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संबंधित प्रश्न
Write two major functions of ovary.
Differentiate between the following pair:
Uterus and vegina
Differentiate between Identical twins and fraternal twins.
Give appropriate term of the following:
The monthly discharge of blood and disintegrated uterine tissues in human female.
Multiple Choice Question:
Sterilization in the female involves cuffing and tying the
The _______ is also called the womb.
Observe the diagram and answer the following questions.
- Label the indicated parts 1, 2 and 3 in the diagram.
- Where the fertilization of ovum occurs?
- Where does the embryo get implanted after fertilization?
The part of fallopian tube closest to the ovary is ______.
To answer the question, study the graphs below for Subjects 1 and 2 showing different levels of certain hormones.
If the peak of Hormone A does not appear in the study for Subject 1, which of the following statement is true?
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:
