Busy. Please wait.
Log in with Clever

show password
Forgot Password?

Don't have an account?  Sign up 
Sign up using Clever

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.
Didn't know it?
click below
Knew it?
click below
Don't know
Remaining cards (0)
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

Chapter 12

Cardiac Cycle

Systole Contraction of the heart muscles
Diastole Relaxation of the heart muscles
Phases of contraction Atrial systole, ventricular systole, and atrial and ventricular diastole
Lub The lub sound of the heart is caused by the closure of both AV valves (bicuspid/tricuspid), this occurs at the end of atrial systole.
Dup The dup sound of the heart is caused by the closure of both semilunar valves of the heart. This occurs at the end of ventricular systole.
HR (Heart Rate) The number of times the heart beats in a minute.
SV (Stroke Volume) The amount of blood pumped by a ventricle each time it contracts.
Cardiac output Cardiac output = Heart rate X stroke volume.
Cardioregulatory Center This part of the medulla oblongata, in the brain, controls how fast the heart beats. Parasympathetic signals caused the heart to slow down and sympathetic signals cause the heart rate to increase.
P Wave of ECG Depolarization (Systole) of the atria
QRS Complex of ECG The depolarization (Systole) of the ventricles. The atria are in diastole at this time but it is not seen on the ECG.
T Wave of ECG The repolarization (Diastole) of the ventricles.
Ateries Carry blood away from heart. (3 layers: tunica intima, tunica media, tunica externa)
Arterioles Small arteries that can constrict and relax to distribute blood flow.
Cappiliaries Microscopic blood vessels used for gas/solute exchange.
Veins Carry blood toward the heart.
Blood Pressure The force of blood against the walls of blood vessels.
Hypotension Low blood pressure
Hypertension High Blood Pressure
Created by: Mr.Klein
Popular Anatomy sets




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:
restart all cards