Cardiac Condunction/EKG
This is where cardiac action potentials begin.
SA node (sinoatrial node)
This is the contraction phase of the heart.
What is systole?
This part of the heart is where blood returns after systemic circulation
What is the right atrium?
This blood pressure occurs during contraction and is the bigger number
What is systolic blood pressure?
This is a recording of the electrical activity of the heart muscle
What is an EKG trace?
This delays the cardiac action potential for one second
AV node
This is how cardiac output is calculated
What is stroke volume * heart rate?
These 3 things facilitate/maintain venous return
What is pressure gradient, respiratory pump and skeletal muscle?
This is the Mean Arterial Pressure for a BP of 125/85
What is 98?
This is the plane that the 6 limb leads measure
What is the frontal plane?
This channel causes fast depolarization in pacemaker potentials
Voltage-gated K+ channels
These valves are open during isovolumic contraction.
What are semilunar valves?
This is the equation for blood flow
What is (BP1-BP2)/Resistance?
This is how the sympathetic nervous system responds for high BP
What is inhibited, decreases stroke volume and vasodilation?
This is what the QRS complex represents
What is depolarization of the ventricular muscle?
This opens the Ca2+ channels in the sarcoplasmic reticulum
What is trigger calcium?
This is what stroke volume is equal to.
What is End Diastolic Volume - End Systolic Volume?
This is why blood flow is much better in aorta/arteries compared to veins/venules.
What is aorta/arteries have a much higher BP gradient (70) than veins/venules (5)?
This is what a faint pulse could indicate
What is arteriosclerosis and hypotensive emergency?
This is missing in a Atrial Fibrillation EKG
What is P waves?
These 2 channels are open during the pacemaker potential
Ca2+ and Na (HCN)
These are the 2 components of an efficient heart
High SV and Low HR
This occurs when there is increased CO2 and acid in blood
What is vasodilation leading to increased bloodflow?
This is the stage of hypertension that a BP of 130/79 would indicate
What is Stage 1 hypertension?
This is what a EKG on Ritucci would indicate
What is a first degree right bundle branch block?