Advertisements
Advertisements
प्रश्न
The circulatory system of the fetus and that of the mother are never connected directly. What are the advantages?
उत्तर
The separate circulatory system facilitates quick diffusion of nutrients, metabolic waste and respiratory gases between the foetus and the mother. Bacteria and other pathogens cannot pass from the mother to the foetus because they are filtered out by the placenta. Blood pressure changes in the maternal circulation also cannot affect the foetus which has delicate blood vessels.
APPEARS IN
संबंधित प्रश्न
State whether the following statements are TRUE (T) or FALSE (F):
Rewrite of the wrong statements by correcting only one word either at the beginning or at the end of the sentences.
Gestation period in humans is about 380 days.
Describe the functions of Amnion
Differentiate
Uterus and Urethra.
The diagram given below is that of a developing human foetus in the womb. Study the same and then answer the questions that follow:
- Name the parts '1' to '5' indicated by guidelines.
- What term is given to the period of development of the foetus in the womb?
- How many days does the foetus take to be fully developed?
- Mention two functions of the parts labelled ‘2’ other than its endocrine function.
- Name the hormone (anyone) produced by the part labelled ‘2’.
- What is the function of the part marked ‘3’?
Complete the following sentences with appropriate word:
The embryo inside the uterus is protected from jerks or mechanical shocks by ________
Which of the following hormones is produced by ovary?
Name the following:
Two hormones secreted from placenta.
Write one sentence using the following term pertaining to reproduction in humans.
Placenta
Which of the following cannot pass readily through the placenta to the foetus?
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?
