Gated channels - Guides d'étude, Notes de cours & Résumés

Phosphatase correct answers This myosin-actin interaction forms the basis of the cross-bridge cycle (CBC), which causes muscle contraction, as in skeletal -bridge cycling (CBC) requires phosphorylation of the myosin light chain (LC20). A .............. is an enzyme that removes a phosphate group from its substrate composed of actin and are dynamic and are lengthen by polymerization or shortened by depolarization correct answers microfilaments are provide strucule support for the cell ...

Mam Phys Final Exam 1 Questions & Answers 2024/2025 1. All of the following are true statements about the action potential EXCEPT: a) Opening of the voltage-gated Na-channels will move the membrane potential to the equilibrium potential of Na. b) Opening of voltage-gated K-channels will move the membrane potential to the equilibrium potential of K. c) The Hodgkin cycle causes the fast change in membrane potential during the rising phase of the action potential. d) The falling phase of ...

LIFSCI 7B XL - Animation: Reading Phylogenies Copy Questions and Answers Rated A+ What is the role of the axon hillock in neural signaling? The axon hillock integrates incoming signals and determines whether to initiate an action potential. How does myelination affect the speed of action potential propagation along an axon? Myelination increases the speed of action potential conduction by enabling saltatory conduction, where the signal jumps between nodes of Ranvier. Why do vo...

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 ...

NURS 5315 Advanced Patho Exam 1 with Complete Solutions Steps of the Action Potential Correct answer Depolarization Repolarization Hyperpolarization Depolarization Correct answer movement of the intracellular charge towards zero (more positive charge) Voltage gated Na channels open and allow Na to enter the cell -> voltage inside the cell moves towards zero Repolarization Correct answer Once the intracellular charge reaches zero, the negative polarity of the inside of the cell i...

Relative refractory periods - ️️occurs towards the end of the T-wave when most ventricular cells are repolarized and vulnerable to new stimuli; can lead to VT if PVC lands during this time Refractory = resistant Supraventricular Tachycardia (SVT) - ️️§ regular but fast rhythm § rate 150-250 § P wave merged with T wave § PRI variable & difficult to measure § QRSà typically narrow § Common causes: stimulants, electrolyte imbalance, hypoxia Sinoatrial Node (SA node) Rate? ...

When compared to a classic lever system, the synovial joints of our Musculoskeletal system play the role of the _________? A. Weight B. Force C. Fulcrum D. Lever E. Resistance - Answer-C. Fulcrum. Which of the following event will occur when depolarizing graded potential's reach the membrane of the axon Hillock, causing its membrane potential to reach threshold? A. Ligand-gated Ca++ channels close rapidly B. Voltage-gated Ca++ channels open rapidly C. Ligand-gated Na+ channels close ...

Action potentials are first generated at the axon hillock because this is where a high concentration of _______ are located. a. non-gated K+ channels b. voltage-gated Na+ channels c. transporters d. Na+/K+ pumps - ANSWER b

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...

BIOS 252 COMP EXAM QUESTIONS AND ANSWERS 100% VERIFIED. When compared to a classic lever system, the synovial joints of our Musculoskeletal system play the role of the _________? A. Weight B. Force C. Fulcrum D. Lever E. Resistance - correct answer. C. Fulcrum. When compared to a classic lever system, the synovial joints of our Musculoskeletal system play the role of the _________? A. Weight B. Force C. Fulcrum D. Lever E. Resistance - correct answer. C. Fulcr...