Answer to Question 1
T
An abnormal (i.e., pathologic) Q wave is more than 0.04 seconds in duration or more than one third the height of the following R wave in that lead. Myocardial infarction is one possible cause of abnormal Q waves. In the early hours of infarction, an abnormal Q wave may not have developed to its full width or amplitude. Therefore a single ECG tracing might not identify an abnormal Q wave. In a patient with a suspected myocardial infarction, be sure to look at Q waves closely. Even if the initial ECG tracings do not show Q waves that are more than 0.04 seconds in duration or equal to or more than one third of the amplitude of the QRS complex, pathology must be considered if the Q waves become wider or deeper in each subsequent tracing.
Answer to Question 2
A
The right coronary artery supplies the right atrium and ventricle with blood.
Connell's experimental manipulation of species indicated the presence of competition.
Brumbies grazing on Alpine Way near Dead Horse Gap
Lymphatic vessels (green) pick up excess tissue fluid, purify it in lymph nodes, and return it to th
An electrocardiogram (EKG) wave, a record of the electrical signal as it moves through the conductio
granulation tissue
Three Types of Muscular Tissue