The brain neurons may get irreversibly damaged if exposed to significant hypoxia for:
Ans. A. 8 minutes.The cerebral cortex can tolerate the acute hypoxia due to complete circulatory arrest for 5-10 min at 28deg C, 20 min at 20deg and 50 min at 15degC
8 minutes.
20 min
5 sec.
15 sec
Nervous System