The time it takes for electrical impulses to travel from the SA node to the AV node is the ____.
A. S-T segment
B. Q wave
C. R wave
D. P-R interval
E. Q-T interval
D. P-R interval
The P-R interval is the time it takes electrical impulses to travel from the SA node to the AV node.
You might also like to view...
Breast self-examination should be performed:
A. on the first day of each month. B. at the time of ovulation. C. on the last day of the menstrual cycle. D. on the fifteenth day of each month.
During the ____ phase of wound healing, which starts on about day two and may last three weeks, fibroblasts start to form a bed of collagen and rudimentary tissue.
A. proliferative B. remodeling C. hemostasis D. modeling
From which surface view is a deep developmental groove evident on the root?
A. buccal B. lingual C. mesial D. distal
Interferon in the blood acts as which type of nonspecific body defense?
A. Phagocytosis B. Mechanical barrier C. Chemical barrier D. Fever E. Inflammation