Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
heart written
| Question | Answer |
|---|---|
| luub sound | AV valves close, beginning of systole |
| dub sound | SL valves close, beginning of diastole |
| systole | contraction of heart muscle |
| diastole | relaxation of heart muscle |
| step 1 of cardiac cycle | all chambers in diastole, blood fills chambers, AV valve open |
| step 2 of cardiac cycle | SA node fires, produces P wave, ventricles are still in diastole, atrial systole occurs |
| step 3 of cardiac cycle | AV node fires, produces QRS complex, sets off ventricular systole, atria enters diastole, luub sound occurs |
| step 4 of cardiac cycle | blood is pumped into arteries, end of ventricular systole, atrial diastole occuring |
| step 5 of cardiac cycle | produces T wave, all chambers in diastole and AV valves open, SL valves close, dup sound |
| atrial diastole | steps 3-5,1 |
| atrial systole | step 2 |
| ventricular systole | step 3 and 5 |
| ventricular diastole | step 1-2,5 |
| cardiac output | amount of blood pumped out by each ventricle in 1 minute |
| depolarization | the action potential begins when the pacemaker potential reaches threshold |
| repolarization | brings membrane potential back to its negative voltage |
| atrioventricular valves | tricuspid and biscuspid/mitral |
| tricuspid valve | RA-RV |
| bicuspid valve/mitral | LA-LV |
| semilunar valves | pulmonary and aortic |
| pulmonary valve | RV-pulmonary trunk |
| aortic valve | LV-aorta |
| blood flows from atrium to | ventricles |
| left atrium/ventricle on which side of paper | right side |
| right atrium/ventricle on which side of paper | left side |
| blood flows from vena cava to the | right atrium |
| blood flows from right atrium thru the | tricuspid valve |
| blood thru tricuspid valve end up in the | right ventricle |
| blood from right ventricle goes thru the | pulmonary valve |
| blood thru pulmonary valve ends up in the | pulmonary trunk |
| blood in pulmonary trunk flows to the | right/left pulmonary artery |
| blood from right/left pulmonary artery flows to the | lungs |
| blood from the lungs go to the | right/left pulmonary veins |
| blood from right/left veins flows to the | left atrium |
| blood from left atrium flows thru the | bicuspid valve |
| blood thru the bicuspid valve ends up in the | left ventricle |
| blood in the left ventricle flows thru the | aortic valve |
| blood thru the aortic valve ends up in the | aorta |
| blood in the aorta flow | throughout the body |
| veins dealing with the heart go | towards heart |
| arteries dealing with the heart go | away from heart |
| P wave | depolarization of SA node |
| QRS complex | ventricular depolarizaition and atrial repolarization |
| T wave | ventricular repolarization |
| step 1 of excitation | SA node generates impulses -75 times a minute |
| step 2 of excitation | AV node delays the impulse 0.1 second |
| step 3 of excitation | impulse passes from atria to ventricles via AV bundle, AV bundles split into 2 pathways in inter ventricular septum |
| step 4 of excitation | bundle branches carry impulse toward apex |
| step 5 of excitation | purkinje fibers carry impulse to heart and ventricular walls |
| what is considered the pacemaker of the electrical system in the heart | the SA node |
Created by:
brookeklinger
Popular Biology sets