heart vocab

Question 1

artificial pacemaker

Answer 1

a device that uses electrical impulses to regulate the heart rhythm or produce it

Question 2

atrial fibrillation

Answer 2

an irregular and often very rapid heart rhythm

Question 3

autonomic nervous system

Answer 3

part of the nervous system that regulates physiologic process including heart rate, blood pressure and digestion

Question 4

AV node

Answer 4

connect the electrical systems of the atria and the ventricles

Question 5

bundle branches

Answer 5

part of the electrical system of the heart

Question 6

bradycardia

Answer 6

slower than normal heart rate

Question 7

bundle of his

Answer 7

connecting the Av node + the left and right bundle branches of the septal crest

Question 8

ectopic focus

Answer 8

abnormal pacemaker sites within the heart (outside of the SA node)

Question 9

electrocardiogram

Answer 9

records the electrical signal from the heart

Question 10

normal sinus rhythm

Answer 10

the rhythm of a healthy heart

Question 11

purkinje fibers

Answer 11

muscles that conduct electrical impulses that allow contraction to the cardiac muscle

Question 12

sinoatrial node

Answer 12

muscle fibers located in the right atrium of the heart: they’re responsible for initiating the heartbeat

Question 13

tachycardia

Answer 13

term for a heart rate over 100 bpm

Question 14

ventricular fibrillation

Answer 14

a type of arrhythmia or irregular heartbeat that affects your hearts ventricles.