MCQ
If a man $R{h^ + }$ marries a lady $R{h^ - }$, then
- AFirst child will die
- ✓First child will survive
- CNo child will be born
- DNone of these
✓
Answer
Correct option: B.
First child will survive
b
(b) $R{h^ - }$ woman married with $R{h^ + }$ man, become sensitized simply by carrying a $R{h^ + }$ child within her body.
(b) $R{h^ - }$ woman married with $R{h^ + }$ man, become sensitized simply by carrying a $R{h^ + }$ child within her body.
Some of the cells from the embryo may mix into her own blood stream during development.
The first child of the parents with this genetic back ground is nearly always normal.
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(i) The amount of the filtrate formed by the kidneys per minute is called glomerular filtration rate (GFR).
(ii) GFR in a healthy individual is approximately 125 ml/minute, i.e., 280 litres per day.
(iii) Glomerular filtration rate regulated by juxtaglomerular apparatus (JGA).
(iv) JGA is formed by cellular modifications in the distal convoluted tubule and the afferent arteriole at the location of their contact.
(v) A fall in GFR can activate the JG cells to release renin which can stimulate the glomerular blood flow and thereby the GFR back to normal.
(vi) Rennin which converts angiotensinogen in blood to angiotensin II and further to angiotensin I, which is a powerful vasoconstrictor, increases the glomerular blood pressure and thereby GFR.
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