Question

Given below is the figure of an important structure developed during pregnancy.

1. Name the structure and its type. 

2. Identify ‘A’. In which technique it is used. 

3. Identify ‘B’ What is its function?

Answer 1

(1) The given figure is placenta. The type of placenta in humans is haemochorial placenta. 

(2) A is amnio tic fluid. Amnio tic fluid is withdrawn in amniocentesis technique. From this fluid foetal cells can be obtained, which are examined for any chromosomal abnormality by karyotyping. 

(3) B is umbilical cord. This is the connection between placenta of mother and growing foetus. Through the umbilical cord, foetus gets nutrition and oxygen. Nitrogenous wastes and carbon dioxide is collected from foetus and brought into maternal circulation.