Refractory period - Study guides, Class notes & Summaries

©FYNDLAY 2024/2025 ALL RIGHTS RESERVED 2:49PM A+ 1 PCOL 825 EXAM 1 Questions And Answers |Latest 2025 | Guaranteed Pass. What does a heart beat (cardiac excitation) rely on? - AnswerSequential/organized action potential generation Organized propagation of the action potentials What is automaticity? - AnswerHeart contracts without outside signal What is The primary pacemaker of the heart? - Answerthe SA node What are the autorhythmic/ pacemaker tissue of the hears? - AnswerSA node AV...

BIO235 Midterm 1 UPDATED ACTUAL Exam Questions and CORRECT Answers A-Band - CORRECT ANSWER - one of the transverse bands making up repeated striations of cardiac and skeletal muscle; region of aligned myosin-containing thick filaments Absolute Refractory period - CORRECT ANSWER - time during which an excitable membrane cannot generate an action potential in response to any stimulus

RCES 2023 Exam Questions with All Correct Answers What is ARVD and when does it occur? - ANSWER Arrhythmogenic Right Ventricular dysplasia; occurs when the RV myocardium is replaced by fatty and fibrotic tissue What are afterdepolarizations? - ANSWER Abnormal secondary voltage depolarizations during the cardiac action potential What are the two types of afterdepolarizations? - ANSWER EADs (early after depolarizations) and DADs (delayed afterdepolarizations What ...

What does the QT interval represent? - ️️ventricular depolarization and repolarization What is antedromic conduction? - ️️Antedromic conduction is a type of AVRT in which the impulse travels down the pathway and up the AV node--seen in WPW What is orthodromic conduction? - ️️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 3 criteria are needed to sustain a reentry circuit? - ️️1.) Parallel pathways...

depolarization - ANS - inside of cell becomes positive, outside negative - contraction - na+ channel opens - ELECTRICAL repolarization - ANS movement of cells = inside is negative again - na+ channels close, k+ channels open - MECHANICAL p wave qrs wave t wave - ANS - (p) atrial depolarization - (qrs) ventricular depolarization - (t) ventricular repolarization refractory period - ANS per of time where cardiac cells cannot respond to stimulus absolute refractor...

FISDAP Paramedic Final 2023/2014 645 QUESTIONS WITH ANSWERS You have received an order for a dopamine drip. You carry 500cc bags of D5W. How much dopamine should you add to the bag to create a 1600mcg/1mL dilution? A. 800mg B. 1600mcg C. 1600mg D. 400mcg - CORRECT ANSWER A. 800 mg 2. During the absolute refractory period, what happens to the cardiac cell? A. It is unable to be stimulated. B. The cell is vulnerable to partial stimulation. C. Potassiu...

NSG 531 Advanced Pharmacology: Exam Questions With Correct Answers Latest Updated 2024/2025 Graded A+. what is the difference between cardiac myocyte action potential and that of the CNS or ANS? - ANSWER nerve cell action potential is very short cardiac action potential is much longer they are longer to have adequate filling time in order to get a good contraction for a reasonable bolus of blood the only way this can happen is if the action potential is longer this will also mean that the ...

NSG 531 Advanced Pharmacology Exam 3 Questions With Correct Answers Latest Updated 2024/2025 Graded A+. what is the difference between cardiac myocyte action potential and that of the CNS or ANS? - ANSWER nerve cell action potential is very short cardiac action potential is much longer they are longer to have adequate filling time in order to get a good contraction for a reasonable bolus of blood the only way this can happen is if the action potential is longer this will also mean that the...

IBHRE Test Questions and Answers 100% Solved Functional Refractory Period (FRP) the coupling interval which first results in a measurable degree of delay in impulse conduction effective refractory period the longest coupling interval to be associated with block resting (transmembrane) potential the voltage difference between the inside and outside of the cell fiber (negative inside cell) action potential the cellular characteristics of depolarization and repolarization. Consists of 5 ...

NSG 531 Advanced Pharmacology Exam 3 Questions With Correct Answers Latest Updated 2024/2025 / Graded A+. what is the difference between cardiac myocyte action potential and that of the CNS or ANS? - ANSWER nerve cell action potential is very short cardiac action potential is much longer they are longer to have adequate filling time in order to get a good contraction for a reasonable bolus of blood the only way this can happen is if the action potential is longer this will also mean that t...