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Download MCQ Key Terms PDF eBook
Question: anterior interventricular artery
Choices:
(also, left anterior descending artery or LAD) major branch of the left coronary artery that follows the anterior interventricular sulcus
Question: atrial reflex
Choices:
(also, called Bainbridge reflex) autonomic reflex that responds to stretch receptors in the atria that send impulses to the cardioaccelerator area to increase HR when venous flow into the atria increases
Question: anterior interventricular sulcus
Choices:
sulcus located between the left and right ventricles on the anterior surface of the heart
Question: atrioventricular (AV) node
Choices:
clump of myocardial cells located in the inferior portion of the right atrium within the atrioventricular septum; receives the impulse from the SA node, pauses, and then transmits it into specialized conducting cells within the interventricular septum
Question: aortic valve
Choices:
(also, aortic semilunar valve) valve located at the base of the aorta
Question: atrioventricular bundle
Choices:
(also, bundle of His) group of specialized myocardial conductile cells that transmit the impulse from the AV node through the interventricular septum; form the left and right atrioventricular bundle branches
Question: anastomosis
Choices:
(plural: anastomoses) area where vessels unite to allow blood to circulate even if there may be partial blockage in another branch
Question: afterload
Choices:
force the ventricles must develop to effectively pump blood against the resistance in the vessels
Question: atrioventricular bundle branches
Choices:
(also, left or right bundle branches) specialized myocardial conductile cells that arise from the bifurcation of the atrioventricular bundle and pass through the interventricular septum; lead to the Purkinje fibers and also to the right papillary muscle via the moderator band
Question: anterior cardiac veins
Choices:
vessels that parallel the small cardiac arteries and drain the anterior surface of the right ventricle; bypass the coronary sinus and drain directly into the right atrium
Question: artificial pacemaker
Choices:
medical device that transmits electrical signals to the heart to ensure that it contracts and pumps blood to the body
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