There are four methods by which poisons can enter the body. The one that means they were taken by way of the mouth is:

Which of the following patients is the BEST candidate for the administration of nitroglycerin?

A) woman who has taken three doses of prescribed nitroglycerin without relief of chest pain B) A woman with chest pain, prescribed nitroglycerin, and a blood pressure of 104/76 mm Hg C) A man with chest pain, expired nitroglycerin spray, and a blood pressure of 110/80 mm Hg D) An elderly man with crushing substernal chest pain and a blood pressure of 80/60 mm Hg

A device that is used to record the heart's electrical activity is known as:

A. an electrocardiogram (ECG) B. an MRI C. a CT scan D. tomography