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?
This is the formula you should write when you get the exam?
What is MAP = SV x HR x 1/r x v?
This is the Mean Arterial Pressure for a BP of 125/85
What is 98?
This substance, which is converted by ACE, increases blood pressure
What is angiotensin II?
This channel causes fast depolarization in pacemaker potentials
Voltage-gated Ca2+ channels
These valves are open during isovolumic contraction.
What are semilunar valves?
This is what will happen to resistance if blood vessel radius decreases.
What is increase?
This happens to arteries during diastole.
What is recoil to amplify pressure and help blood flow?
Hypertension has these symptoms
What is none?
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?
If a blood vessel radius decrease and the viscosity is increased, blood flow will be this.
What is decreased?
These are the 4 types of circulatory shock
What is hypovolemia, cardiogenic, distributive ,and obstructive?
Ventricular pressure is greater or less than atrial pressure during isovolumic relaxation
What is less than?
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
If a blood vessel radius decreases and resistance decreases, this will happen to blood flow.
What is stay the same or increase (depending)?
This is the stage of hypertension that a BP of 130/79 would indicate
What is Stage 1 hypertension?
This is what the cardiac control center synapses with.
What is parasympathetic out of brain stem and sympathetic out of thoracic?