Advertisements
Advertisements
प्रश्न
How is Placenta formed? What are its functions?
Advertisements
उत्तर
It is formed by the union of uterine endometrial tissue, chorion, and allantois (embryonic tissue). It is attached to the wall of the uterus and through it, the exchange of nutrients, hormones, respiratory gases, and urea occurs between the fetal and maternal circulation.
APPEARS IN
संबंधित प्रश्न
Give appropriate terms for the following:
Rupture of follicle and release of ovum from the ovary.
The circulatory system of the fetus and that of the mother are never connected directly. What are the advantages?
Study the diagram given below and then answer the questions that follow:
(i) Name the parts labeled 1 and 2. State the function of each part.
(ii) State any one function of the amniotic fluid.
(iii) What is the role of the umbilical cord in the development of the fetus?
(iv) Name the part in the diagram which is endocrine in nature.
Complete the following sentences with appropriate word:
The period of complete development of the fetus until birth is termed ______.
Complete the following sentences with appropriate word:
The placenta is ________permeable
During pregnancy, which hormones are secreted by the placenta?
Heart and blood vessels have been formed by the end of five weeks of pregnancy.
Given below is the name of certain stage/substance related to reproduction and found in human body. Answer the questions related to it.
Foetus.
- Where is it contained?
- How does it differ from embryo?
Given below is the name of certain stage/substance related to reproduction and found in human body. Answer the questions related to it.
Morula.
- What is this stage?
- Name the stage which comes next to it?
Write the specific location of the following:
Placenta
