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Blood Flow, Heart Sounds, and the Cardiac Cycle
Overview
13
Anatomy
Undergraduate 1
03/01/2013

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Cards

Term
Blood flow is governed by what two main principles?
Definition
Resistance and Pressure
Term
What device is used to measure blood pressure?
Definition
A sphygmomanometer
Term
Do fluid flow up or down their pressure gradient?
Definition
Down
Term
When a ventricle expands, does its internal pressure rise or fall?
Definition
Fall
Term
When a ventricle contracts, does its internal pressure rise or fall?
Definition
Rise
Term
What is the outcome of the internal pressure of a ventricle falling, if the AV valve is open?
Definition
Blood flown into the ventricle from the atrium above
Term
What is the outcome of the internal pressure of a ventricle raising, is the aortic valve opens?
Definition
Blood will be ejected
Term
True or false - valves do not contain muscles
Definition
True - they are just flaps of tissue
Term
How many heart sounds are there?
Definition
3 - generally only 2 in adults over 30 though
Term
Auscultation
Definition
Listening to the sounds made by the heart
Term
What is the difference in sound between S1 and S2 of the heart?
Definition
S1 = longer and louder
S2 = little softer and sharper
Term
True or false - heart valves make the S1 noise
Definition
False - heart valves operate silently
Term
What operates in conduction with the sounds of S1 and S2?
Definition
The closing of the valves as result in turbulence in bloodstream and movements of heart wall
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