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Under Pressure
Exercise
Intrinsic Conduction System
ECG Category
Vocab
100
What is the force that blood exerts on vessel walls?
Blood Pressure
100
Where are the baroreceptors located?
The aorta and carotid arteries
100
Where is the SA Node located?
Right Atrium
100
The P wave represents ___________ depolarization
atrial
100
Volume of blood moving past a point
Blood Flow
200
The measurement of resistance to flow when the heart is relaxed.
Diastolic Blood Pressure
200
Vigorous will _________ cardiac output and ______ systolic pressure
increase, increase
200
The ________ is known as the "pacemaker" and has the fastest action potential rate (80-100 per minute)
SA node
200
QRS Complex represents the ventricle __________ and atrial _____________.
Depolarization;Repolarization
200
Volume of blood ejected from the ventricle per beat
Stroke Volume
300
Systolic Blood Pressure measure the pressure exerted during
Ventricular systole
300
__________ allows local blood flow to individual tissues to change depending on tissue demands.
Autoregulation
300
__________ contain actin and myosin and create heart muscle contractions
Contractile myocardial cells
300
A long PR interval would indicate conduction issues between the ________ and _________.
SA node and AV node
300
Contraction of the heart
Systole
400
Jeff has a aortic blood pressure of 140/80, what would be his lowest aortic pressure be more than?
More han 80 mm HG
400
__________ center in the medulla triggers peripheral vasoconstriction when low bp
vasomotor
400
Myocardial cells are connected to each other by _______.
Gap Junctions
400
_____________ is a normal rhythm with heart rate less than 60 BPM
Sinus Bradycardia
400
___________ monitor pressure
Baroreceptors
500
What are the five factors that affect arterial blood pressure?
Cardiac output, total peripheral resistance, blood volume, blood viscosity, and elasticity of artery walls
500
________ center in the medulla triggers increased heart rate when low blood pressure.
cardioacceleratory
500
Please list in order the path of a electrical signal traveling through the intrinsic conductions system.
SA node, AV node, AV bundle, left and right bundle branches, and Purkinje fibers
500
_______________ is when the SA node is non-functional, there is no interval between P wave and QRS complex and the rate is typically 40-60 BPM.
Junctional Rhythm
500
Number of times the heart contracts per minute
Heart Rate