Term
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Definition
| What sets the pace for the entire heart? |
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Definition
| Result of INCREASED Na+ entering and a DECREASE in K+ leaving |
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Definition
| Result of INCREASED Ca++ entering |
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Definition
| Result of DECREASED Ca++ entering and INCREASE is K+ leaving |
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Definition
| Only point of electrical conduct between atria and ventricle |
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Term
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Definition
| Resting Heart rate less than 60bpm |
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Definition
| Resting heart rate more than 100bpm |
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Definition
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Definition
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Definition
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Term
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Definition
| Thin protein filaments in myobibrils (contractile units of muscle) |
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Term
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Definition
| Thick protein filaments in myobibrils (contractile units of muscle) |
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Term
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Definition
| LOW resistance electrical communication pathways |
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Term
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Definition
| Neurotransmitter acting through M2 receptors during parasympathetic stimulation |
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Term
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Definition
| Neurotransmitter acting through beta adrenoreceptors during sympathetic stimulation |
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Term
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Definition
| Type of stimulation which has a positive chronotropic effect |
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Term
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Definition
| In an ECG Artial Depolarisation is signified by |
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Term
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Definition
| In an ECG The PR segment is largely due to |
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Term
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Definition
| In an ECG Ventricular depolarisation is signified by |
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Term
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Definition
| In an ECG Ventricular systole is signified by |
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Term
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Definition
| In an ECG Ventricular repolarisation is signified by |
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Term
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Definition
| In an ECG Ventricular diastole is signified by |
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Term
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Definition
| This nervous supply dominates under resting conditions |
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Term
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Definition
| The volume of blood ejected from each ventricle per heartbeat |
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Term
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Definition
| The resistance into which the heart is pumping |
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Term
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Definition
| If afterload increase, SV increase so the force of contraction... |
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Term
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Definition
| Increased ventricular muscle mass (to overcome resistance of hypertension) |
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Term
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Definition
| Intrinsic control is within the heart whereas extrinsic control involves... |
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Term
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Definition
| Volume of blood pumped by each ventricle per minute |
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Term
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Definition
| Approximate Resting CO in healthy adult |
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Term
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Definition
| Heart sounds as produce by the.. |
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Term
Passive filling.
AV Valves open, benous return flows into ventricles (up to 80% full) |
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Definition
First stage in the cardiac cycle?
Describe |
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Term
Atrial contraction
between P and QRS complex on ECG |
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Definition
Second stage in the Cardiac cycle
Where on an ECG |
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Term
Isovolumetric venticular contraction
After QRS Complex
AV valves shut (LUB) |
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Definition
Third stage in the cardiac cycle
Where on an ECG
Which valves shut |
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Term
| Ventricular pressure exceeds atrial pressure |
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Definition
| Why do the AV valves shut |
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Term
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Definition
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Term
(2x diastole + systole)/3 = MAP
Diastole + 1/3(Diastole + systole) |
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Definition
| MAP Calculations using Systole and diastole BP (2) |
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Term
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Definition
| mechanism for blood pressure regulation |
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Term
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Definition
| Arteries are partly constricted at rest, this is called.. |
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Term
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Definition
Extrinsic control fo vascular smooth muscle.
flow = ... |
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Term
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Definition
| This nervous system does not effect the blood vessels |
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Term
| skin, gut and kidney arterioles |
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Definition
| Alpha receptors are predominant on |
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Term
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Definition
| Adrenaline acting on alpha receptors causes |
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Term
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Definition
| This type of nerve fibres supply the venous smooth muscle |
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Term
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Definition
| When this is increased it leads to Increased venous return, SV and MAP |
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Term
Histamine
Prostaglandins
bradykinin |
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Definition
| In the response to tissue injury these humoral agents are released resulting in vasodilatation |
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Term
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Definition
| Humoral agents which result in vasoconstriction |
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Term
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Definition
| This falls when a lying person stands up |
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Term
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Definition
| Result of loss of circulatory blood volume |
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