Depolarization - Study guides, Class notes & Summaries

Advanced Patho NURS 5315 exam 1| Questions With Verified Answers 2024 Action potential Correct Answer: The process by which excitable cells transmit information from one to another. How is the action potential altered by a potassium imbalance? (Hyperkalemia) Correct Answer: The ECF has more K+ ions. The membrane potential becomes more positive (hypopolarized). Cells become MORE excitable. T waves peak. QRS complexes widen. Causes dysrhythmias, weakness, paresthesia. {If membrane p...

This is a collection of cell bodies found in the peripheral nervous system. - Answer Ganglia This part of the autonomic system increases digestion. - Answer Parasympathetic The ventral root of a nerve contains what type of neurons? - Answer Motor (Efferent) This part of a neuron conducts nerve impulses away from the cell body. - Answer Axon An interneuron inside the spinal cord is part of the: - Answer Central nervous system Describe the synthesis and storage of neurotra...

Why is myelin important in the nervous system? A. It allows signals to travel faster along axons because depolarization occurs only at myelinated locations. B. It allows signals to travel faster along axons because depolarization occurs only at nonmyelinated locations. C. It bundles the dendrites of adjacent neurons together. D. It increases capacitance across the cell membrane, which helps electrical signals to leave the axons. E. It traps neurotransmitters, increasing their concentratio...

MAYO ECG Exam Tested Questions & Revised Correct Answers < UPDATED & ALREADY PASSED > PR interval represents: - ANSWER : electrical conduction time from the atria to the AV node Is atrial flutter benign? - ANSWER : no PR interval - ANSWER : .12-.20 QRS interval - ANSWER : <.12 What lead do you look at - ANSWER : V1 Interventions - ANSWER : assess the patient QRS wave - ANSWER : ventricular depolarization P wave - ANSWER : atrial depolarization AV node purpose - ANSWER : de...

allows blood to flow directly from the right atrium into the left atrium to bypass pulmonary circulation - foramen ovale carries blood from the umbilical vein to inferior vena cava; allows some blood to bypass the liver - ductus venosus atrial contraction; systole; p wave - atrial depolarization max volume of air that can be exhaled following maximal inhalation - vital capacity allows blood in pulmonary artery to flow directly into the descending aorta to bypass the pulmonary circula...

Excitability - Answer- the ability of non-pacemaker heart cells to respond to an electrical impulse that begins in pacemaker cells. Depolarization - Answer- occurs when the normally negatively charged cells within the heart muscle develop a positive charge. Conductivity - Answer- the ability to send an electrical stimulus from cell membrane to cell membrane. As a result, excitable cells depolarize in rapid succession from cell to cell until all cells have depolarized. Ex: the wave of depolarizat...

Which of the following BEST describes universal and standard precautions? - correct answer Standard precaution conbine universal and body substance isolation When might you be required to perform a 'stat' ECG? - correct answer When a patient has chest pains or changes in his or her cardiac rhythm Telemedicine monitoring is generally used to evaluate which of the following? - correct answer Artificial pacemaker functioning Which of the following is NOT a reason for performing an ...

NHA CCMA Test | 2023/ 2024| Questions and 100% Verified Answers| LATEST!! 1. What is the epicardium? Answer: The outer most layer of the heart. 2. The sudden rush of blood pushed into the ventricles as a result of atrial contraction is known as Answer: Atrial kick 3. The U wave represents Answer: repolarization 4. What is not necessary in administering an ECG? Answer: Sterilizing the leads 5. Which type of lead is lead III? ...

NSG 531 Rush 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 ...

Depolarization, Summation, and Neural Pathways Questions And Answers Depolarization - ANS-Action potential depolarizes synaptic knob Secondary Messenger - ANS-Ca enters axoplasm triggering norepi First Messenger - ANS-norepi binds to receptor site causing adenyl cyclase within the cytoplasm to catalyze the formation of cyclic AMP from ATP Second Messenger - ANS-cyclic AMP opens ion channels allowing NA to depolarize membrane Summation - ANS-Integration of EPSP's and IPSP's to reach depo...