Quiz Three Flashcards
(39 cards)
O2
Oxygen
CO2
Carbon dioxide
AV
Atrioventricular
SL
Semilunar
ECG
Electrocardiogram
BP
Blood pressure
CABG
Coronary artery bypass grafting
CHF
Congestive heart failure
CAD
Coronary artery disease
DVT
Deep vein thrombosis
PE
Pulmonary embolism
MI
Myocardial infarction
HTN
Hypertension
POTS
Postural orthostatic tachycardia syndrome
ANS
Autonomic nervous system
What are the hearts chambers made up of?
Atrias and ventricles
What do the atrias do for the heart?
The right atrium receives blood from the body.
The left atrium receives blood from the lungs
What does the ventricles do for the heart?
They pump blood to the body and the lungs
Sinoatrial node (SA)
“pacemaker” of the heart, posterior superior wall of the right atrium. Generates impulses that start the heart beat.
Atrioventricular node (AV)
At the base of the interatrial septum. Once the impulse hits the AV node it moves very slowly through it.
Bundle of his (atrioventricular bundle)
Located in the upper interventricular septum. When the impulse leaves the AV node it moves to the bundle of his.
Right and left bundle branches
Located in the lower interventricular septum. The right and left bundle branches bring the impulse to the right ventricle. The left bundle branch brings the impulse to the left ventricle.
Purkinje fibers
Transmit the impulse quickly and efficiently to the ventricular myocardial cells. This causes the ventricular chambers to contract.
Systole (contractive phase)
When the heart is contracting and pumping out the blood