Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

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.
We do not share your email address with others. It is only used to allow you to reset your password. For details read 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.
Don't know
remaining cards
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards
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

Blood Circulation


Pulmonary Circulation -Moves blood to and from the lungs -Pulmonary trunk: Arises from right ventricle. -Pulmonary arteries: Branches of pulmonary trunk which project to lungs. Pulmonary veins: Exit each lung and enter left atrium.
Systemic Circulation: Arteries -Aorta-- From which all arteries are derived either directly or indirectly -Parts--- Ascending, descending, thoracic, abdominal Coronary arteries Supply the heart
Systemic Circulation: Veins Return blood from body to right atrium -Major veins= Coronary sinus (heart) Superior vena cava (head, neck, thorax, upper limbs) Inferior vena cava (abdomen, pelvis, lower limbs) -Types of veins= Superficial, deep, sinuses
Dynamics of Blood Circulation Interrelationships between -Pressure -Flow -Resistance -Control mechanisms that regulate blood pressure -Blood flow through vessels
Blood Pressure Measure of force exerted by blood against the wall Blood moves through vessels because of blood pressure --Measured by listening for Korotkoff sounds produced by turbulent flow in arteries as pressure released from blood pressure cuff
Pulse Pressure Difference between systolic and diastolic pressures: --Increases when stroke volume increases or vascular compliance decreases --Pulse pressure can be used to take a pulse to determine heart rate and rhythmicity
Blood Flow -Amount of blood moving through a vessel in a given time period. -Directly proportional to pressure differences, inversely proportional to resistance
Poiseuille’s Law ---Flow decreases when resistance increases ---Flow resistance decreases when vessel diameter increases
Viscosity --Measure of resistance of liquid to flow --As viscosity increases, pressure required to flow increases
Critical closing pressure Pressure at which a blood vessel collapses and blood flow stops
Laplace’s Law Force acting on blood vessel wall is proportional to diameter of the vessel times blood pressure
Vascular compliance Tendency for blood vessel volume to increase as blood pressure increases More easily the vessel wall stretches, the greater its compliance Venous system has a large compliance and acts as a blood reservoir
Created by: zeenat