Advertisements
Advertisements
प्रश्न
Why is zona pellucid retained around the egg till it reaches the uterus?
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.
APPEARS IN
संबंधित प्रश्न
Differentiate between:
Implantation and pregnancy
The diagram given below represents a system in the human body. Stud the diagram and answer the following questions: 
Mention the number and the name of the part involved in fertilization and implantation from the above diagram.
Name the following:
The separation of the foetus from the mother's body.
Draw a sectional view of the human ovary. Label the following parts :
(ii) Secondary oocyte
(iii) Graafian follicle
(iv) Corpus luteum
After birth, colostrum is released from mammary glands which is rich in ______.
The fertilization of the human egg by the sperm takes place in ______
The ability to reproduce is lost in a female after ______
Which is a pear-shaped muscular organ in females?
Given below are the structural details of a human mammary gland:
- The glandular tissue in the breast has 15-20 clusters. of cells called alveoli.
- The milk is stored in the lumen of the alveoli.
- The alveoli join to form the mammary ducts.
- Mammary ampulla is connected to lactiferous ducts.
Choose the option that gives the correct detail of the human mammary gland.
The______ is also called the womb.
