Save
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account. Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
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

Cardiac Cycle

HintAnswer
Cardiac Cycle SYSTOLE - contraction. blood out of chamber. DIASTOLE -Relaxation, Blood into chamber.
Events in Left Side of Heart Atria + ventricles relaxed. Blood enters heart passively from veins due to BP. Flows thru atria into ventricles.
Events in Left Side of Heart II AV valves open/ semilunar closed. 70 % of ventricular filling occurs. Venous pressure= atrial pressue = ventricular pressure (atrial + ventricular diastole)
Events in Left Side of Heart III -atria relax. ventricles contract. blood in ventricles compressed > AV forced shut. -pressure still not sufficient to open semilunar valvees. vent contracting = no blood leaving, isometric contraction phase.
Events in Left Side of Heart IV -atria in diastole. ventricles systole. - vent pressure increases suffiently to exceed aortic pressure and semilunar valves open -> blood enters aorta (swells + atrial pressure increases) = ventricular ejecction phase
Events in Left Side of Heart V ventricles relax. pressure decreases in ventricle. blood flow backwards from aorta + pulmonary arteries. closes semilunar valves. brief increase in aortic pressure (dictrotic notch)
Events in Left Side of Heart VI ventricles relax. longer for pressure to fall in ventricles. AV valves closed. ISOMETRIC RELAXATION PHASE. Atria + vent = diastole. vent systole-> atria slowly filling w/blood vent/atria P increase slightly
Events in Left Side of Heart VII Ventricular pressure falls below level. all valves open and ventricle begins filling again. atria pressure decreases slightly and vent pressure increases when chambers fill with blood
Heart Sounds - LUB LUB= reverse blood flow due to closure of the AV valves, at the beginning of vent contraction, or systole. When the pressure in the vent rises above the pressure in the atria, venous blood flow entering the vent is pushed back toward the atria
Heart Sounds - DUB Results from closure of aortic and pulmonary semilunar valves at beginning of ventricular diastole, lasts longer
Created by: zeenat
Popular Physiology sets

 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards