Excitable cells - 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...

action potential can be generated by virtually all cells of the body because all cells possess cell membranes - ANSWERfalse, only cells with excitable membranes such as nervous and muscle cells can generate action potential Nodes of Ranvier are only found on myelinated, peripheral neural processes - ANSWERtrue efferent nerve fibers may be described as motor nerve fibers - ANSWERtrue a positive feedback cycle is the main force in the generation of graded potentials at receptor ends - ANS...

Advanced Patho NURS 5315 Exam 1 Questions & Verified Correct Answers Action potential - ANSWER : The process by which excitable cells transmit information from one to another. How is the action potential altered by a potassium imbalance? (Hyperkalemia) - 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 poten...

MCBM 3: Excitable Cells (Talbot)-JCN Exam Questions and Answers 100% CorrectMCBM 3: Excitable Cells (Talbot)-JCN Exam Questions and Answers 100% CorrectMCBM 3: Excitable Cells (Talbot)-JCN Exam Questions and Answers 100% CorrectMCBM 3: Excitable Cells (Talbot)-JCN Exam Questions and Answers 100% Correct Know which cell types are considered excitable and why. - ANSWER - Excitable cells are *capable of developing action potentials* because they *express voltage-gated cation channels* in specific ...

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...

CMB1004 Excitable Cells Exam Questions With 100% Verified Answers What are the four regions of a neurone? - answerDendrites Cell Body Axon Axon Terminal Define an excitable cell - answerAny cell capable of generating an action potential Describe how the resting potential is maintained - answerCell contains slight -ve charge (70mv) Maintained via high permeability of membrane to K+ and active transport of Na+ across membrane Define an action potential - answerA rapid change in membrane...

NURS 5315 Advanced Pathophysiology Test 1 2023. Decreases citric acid cycle production of NADH and leads to using Acetyl-CoA for ketogenesis and lipogenesis What can Reactive Oxygen Species cause? - ANSWER Heart disease, Alzheimers, Parkinsons, Amyotrophic Lateral Sclerosis (ALS), CV disease, HTN, HLD, DM, ischemic heart disease, HF, OSA. Lipid perioxidation, damage proteins, fragment DNA, less *protein synthesis*, chromatin destruction, damage mitochondria What is the body's defense agai...

Excitable CellsWhat is the charge of the resting membrane potential of all cells? Does the ICF or the ECF carry this charge? What is the average RMP value? Do most cells have an RMP that exists in a broad range or a narrow range? - correct answer All cells carry a negative resting membrane potential, and the ICF is negatively charged relative to the ECF. The average RMP value = -70mV. Most cells have an RMP that is small and w/in a narrow range. What types of cells are excitable cells? What i...

epithelial tissue correct answer: protection, absorption, filtration, excretion, secretion, sensory reception eg. stomach lining and skin *Innervated and avascular muscle tissue correct answer: excitable, contractile tissue for movement nervous tissue correct answer: excitable tissue used to send short term signals throughout the body -function is to control and communicate eg. positive and negative feedback connective tissue correct answer: -living cells in a non-living matrix ...

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