Many pilots from the second world war developed cancer attributed to their use

Question 23 of 60   1.667 Points
Nan the anesthetist administered the drug succinylcholine to stop the action of the breathing muscles so that a surgical patient could be mechanically ventilated. The drug substitutes for the body's own acetylcholine. Where would it bind?

 

   A. Postsynaptic receptor.   
 

   B. Presynaptic vesicle.   
 

   C. Presynaptic membrane.   
 

   D. Nerve cell membrane.   
 

   E. Synaptic cleft.   
Question 24 of 60   1.667 Points
Many pilots from the second world war developed cancer attributed to their use of radioactive needles used to shrink tissues in their head in order to be insensitive to extreme altitude changes while flying. Likely the tissue shrinkage resulted in enlargement of what structure?

 

   A. Oval window.   
 

   B. Vestibular canal.   
 

   C. Vestibular tube.   
 

   D. Round window.   
 

   E. Eustachian tube.