Flashcards in Lecture 7 - Exam #1 ECG Material Deck (11):
PNS Stimulation primarily innervates what part of heart?
Uses ACh at pre-ganglionic synapse
Primarily innervates the ventricles
Utilizes ACh throughout all ganglia
What is responsible for the baseline of '0' mV on an ECG?
lack of current flow
normal P-R Interval
Normal Q-T Interval
Mechanism of SNS on heart (not the NT, but HOW it changes heart rate).
Increased Na/Ca influx produces (+) ino/chrono/dromotropic effects
Mechanism of PNS changes to heart (not NT, but actual. Echo is. Of changing HR)
Believed to be an increase in K+ efflux
Velocity of blood in aorta