The structure that separates the right and left halves of the heart is the ______

To test an extremity for pain sensation, you should:

A) use a sharp object, and have the patient tell you if he feels a sharp or dull sensation. B) firmly pinch a fold of skin over the most sensitive part of the extremity. C) stroke the extremity in a distal-to-proximal direction. D) briskly tap the tendon of the elbow or knee.

In some cases, atropine sulfate, in a dose of ______, may be given to children to prevent vagal-induced bradycardia during ET intubation.

A) 0.5 mg B) 1 to 2 mg C) 0.02 mg/kg D) at least 0.01 mg