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प्रश्न
Why is zona pellucid retained around the egg till it reaches the uterus?
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उत्तर
Zona pellucida prevents the implantation of the blastocyst at an abnormal site such as a fallopian tube and it keeps trophoblast cells unexposed till it reaches the uterus. Hence, zona pellucida is retained around the egg until it reaches the uterus.
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संबंधित प्रश्न
Describe the development of a fertilized ovum upto implantation.
Choose the correct answer:
Ovum is a ______________
The diagram alongside is the vertical section of female reproductive organs. Study the diagram and answer the questions that follow:
(i) Name the fully developed part of ovary containing the ovum.
(ii) Name the organ of the female body in which the foetus develops.
(iii) What is ovulation?
(iv) Which two hormones are secreted by ovary?
Differentiate between the graafian follicle and corpus luteum.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
The cilia lining the oviduct funnel, push the released ovum into the uterus.
Which of the following is not a part of female reproductive system?
Which of the following are accessory ducts of female reproductive system?
Which of the following is a finger like structure and lies at the upper junction of the two labia minora above the urethral opening?
Which part of ovary in mammals acts as an endocrine gland after ovulation?
The finger-like projections, called fimbriae, help in the collection of ovum into the fallopian tube following ovulation.
