The second stage of mitosis is _______________. During this stage, the chromosomes line up in the middle of the cell between the centrioles on spindle fibers. 

Wallenberg's syndrome is characterized by

a. Unilateral facial droop b. Brief attacks of excruciating pain c. Loss of pain and temperature sensation over the ipsilateral face and contralateral body d. Paralysis of the lower half of the face

Which of the following should be observed when storing cylinders? I. Post the names of gases being stored. II. Keep empty and full cylinders separate. III. Use chains to secure the cylinders to the wall. IV. Do not store flammable substances with the cylinders

A) I B) I and II C) I, II, and III D) I, II, III, and IV