1.

Forced deep breathing for a few minutes by a person at rest may be followed by a temporary cessation of breathing, because of:

A. Too much \[{{O}_{2}}\] in blood. 
B. Too much \[C{{O}_{2}}\] in blood, 
C. Little \[C{{O}_{2}}\] in blood.        
D. Both too much \[{{O}_{2}}\] and very little \[C{{O}_{2}}\] in blood.
Answer» E.


Discussion

No Comment Found

Related MCQs