Heart Vocab

Question 1

Atrial fibrillation

Answer 1

a heart arrhythmia when the normal beating in the upper chambers of the heart is irregular and blood doesn’t flow as well from the atria to the lower chambers of the heart

Question 2

AV node

Answer 2

a small structure in the heart near the noronary sinus on the interatrial septum. It controls the passage of the heart’s electrical signal from the atria to the ventricles and coordinates the impulses

Question 3

Bundle branches

Answer 3

A part of the electrical system of the heart which controls the hearbeat and is made up of several parts that tell the ventricular muscle when to contract

Question 4

Bundle of his

Answer 4

An elongated segment connecting the AV node and the bundle branches of the septal crest and transmits electrical impulses from the node to the bundle branches

Question 5

Purkinje fibers

Answer 5

A network of fibers that recieve conductive signals originating at the AV node and simultaneously activate the left and right ventricles by directly simulating the ventricular myocardium

Question 6

Sinoatrial node

Answer 6

A small body of specialized muscle fibers, located in the right atroim whose activity is responsible for initiating the heart beat

Question 7

Ventricular fibrillation

Answer 7

A type of arrhythmia that affects the heart’s ventricles. The lower heart chambers contract in a very rapid and uncoordinated manner which causes the heart to not pump blood to the rest of the body

Question 7

Autonomic nervous system

Answer 7

The part of your nervous system which controls the automatic functions of your body that you need to survive and connects your brain to most of the internal organs

Question 8

Ectopic focus

Answer 8

An excitable group of cells that causes a premature heartbeat outside the normally functioning SA node of the heart