Final Flashcards
What starts the heartbeat?
The sinus nodes, which makes the AV nodes work
What does the Atrioventricular do?
Squeezes the ventricles
What do the heart valves do?
Open and close for the blood to move
How many valves are in the heart and what are they?
4 valves, 2 AV valves and 2 SL (semilunar)
What do valves do?
They prevent. the backward. flow of blood
What is the Atrioventricular?
sends blood between the atrium and the ventricle, including the tricuspid and the mitral valve
What is the semilunar?
Looks like a 1/2 moon, and sends blood out of the heart, including the Pulmonic valve, Aortic valve
What is the order of the blood flow?
- Blood comes to the heart needing oxygen - enters through the vena cava or the inferior vena cava
- The pulmonary artery. sending blood to the lungs for oxygen
- Lungs. oxygenate the blood and send it back to the heart via the pulmonary vein
- The blood leaves the heart via the aorta
What is the systole heartbeat?
S1 or the Lubis, the sound of the closing of the atrioventricular valves
What is the Diastole?
S2 or the Dub, it is the semilunar valve closing
What is the S3 sound?
The pause, in children or pathology it can be heard as a gallop; it is the absence of sound when the mitral valve opens; this begins the heartbeat process
what is the S4 sound?
Pathological, it. is the sound immediately after S1, sounds like a hiccup
What is the Systole number in BP?
High number is when the pressure is the hardest or highest on the blood vessels, and the blood is leaving the heart.
What is the Diastole number in BP?
Lower number when the pressure is the lowest or softest on the blood vessels; the blood goes back to the heart
What is RRR?
Regular. rate. and rythem