Multiple Choice
Choose the correct sequence of electrical current flow through the heart wall.
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18. The Heart
Electrical Conduction System of the Heart
Back18. The Heart
Electrical Conduction System of the Heart
- Textbook Question
How does the heart's ability to contract differ from that of other muscles of the body?
910views - Multiple Choice
Which center in the medulla oblongata controls the sympathetic neurons that stimulate the heart?
1450views20rank1comments - Textbook Question
The ______ is the primary pacemaker of the heart.
a. Atrioventricular node
b. sinoatrial node
c. Purkinje fiber system
d. Atrioventricular bundle
902views - Textbook Question
If the papillary muscles fail to contract:
(a) The ventricles will not pump blood
(b) The atria will not pump blood
(c) The semilunar valves will not open
(d) The AV valves will not close properly
(e) None of these happen
923views - Multiple ChoiceIn the electrical conduction system of the heart, which structure normally serves as the pacemaker by initiating the heartbeat?29views
- Multiple ChoiceWhich component of the heart's electrical conduction system is responsible for initiating the heartbeat?360views
- Multiple ChoiceIn which situation should synchronized cardioversion be used?576views
- Multiple ChoiceWhich of the following is not part of the intrinsic conduction system of the heart?279views
- Multiple ChoiceWhich of the following is the correct sequence of components in the heart's electrical conduction system?114views
- Multiple ChoiceWhich of the following is not part of the cardiac conduction system?418views
- Multiple ChoiceWhich of the following receive(s) blood during ventricular systole?361views
- Multiple ChoiceWhy are gap junctions a vital part of the intercellular connection of cardiac muscles?505views
- Multiple ChoiceWhich of the following correctly lists the main components of the cardiac conduction system in the order that an electrical impulse travels through the heart?159views
- Multiple ChoiceWhich of the following represents ventricular depolarization in the heart's electrical conduction system?351views