Exam Study Guide 2024 Updates

Referring to equation V=IR, which relates voltage to current flow and resistance, reducing the voltage by half will do what to the resistance? {Ans: it will decrease by half}True of False: The AV node is located at the apex of the triangle of Koch? {Ans: True}3rd degree AV block {Ans: atria and ventricles beat independently of each other (P waves have no relation to QRS waves)}The two primary cardiac responses associated with a Sympatheticneural discharge are ________heart rate and _________ AV conduction {Ans: increased, increased}What is orthodromic conduction? {Ans: A type of AVRT in which the impulse travels down the AV node and up the pathway--this type of conduction is more common}What happens in sinus node pause? {Ans: The SA node doesnt generate a signal--creating a pause}What is the fast pathway? {Ans: A pathway that naturally has fast conduction but repolarizes slowly}What is Naxos disease? {Ans: Has symptoms of ARVD (myocardium is replaced for fatty tissue) as well as an association of diffuse palmoplantar keratoderma and thick wooly hair}Which pathway is responsible for sending impulses to the ventricles the majority of the time? {Ans: The fast pathway}What is the most anterior