A slight bony ridge that runs laterally across the occiput on either side of the external occipital protuberance and provides attachment sites for the trapezius and splenii muscles

Atrial tachycardia is characterized by

A) undulating, fibrillatory baseline between the irregular QRS complexes. B) abnormal P waves preceding the regular QRS complexes. C) a heart rate of 250—350. D) sawtooth waves between the QRS complexes.

A patient is seen in the office with a general complaint of fatigue and malaise and often is not aware he or she is sick. Which stage of infection is the patient most likely in?

A) Incubation B) Invasion and multiplication C) Chronic D) Prodromal