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प्रश्न
Describe briefly the ways how a mammalian embryo is respires
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उत्तर
The mammalian embryo respires by the diffusion of oxygen through the placenta to enter the bloodstream of the embryo. The waste carbon dioxide passes through the umbilical cord and leaves through the placenta.
संबंधित प्रश्न
Name the following:
The membrane which protects the foetus and encloses a fluid
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.
Given below is the name of certain stage/substance related to reproduction and found in human body. Answer the questions related to it.
Hyaluronidase.
- Is it an enzyme or simply a protein?
- What is its function?
Differentiate between:
Amnion and allantois
What is Placenta?
Which of the following reproductive structures is responsible for secretion of hCG?
Which of the following cannot pass readily through the placenta to the foetus?
Which characteristic describes the direction of blood flow through the umbilical arteries?
Which placental function involves the supply of essential nutrients such as glucose, amino acids, and vitamins to the foetus?
The placenta is described as a temporary structural and functional connection between which two circulations?
