Nerve impulse - Study guides, Class notes & Summaries

AAET Registry Exam Questions & Answers, Updated Summer 2023-2024-When the synaptic vesicles are electrically stimulated by a nerve impulse, synaptic vesicles gravitate to the outer membrane of the presynaptic wall and release acetylcholine into the synaptic cleft. The Ach molecules migrate to the postsynaptic cells where they attach to the specific receptors. When enough neurotransmitters are received by the receptors to overcome the firing threshold a CMAP is generated causing muscle contractio...

Anatomy & Physiology: Nerve Impulse Conduction What is the first step in nerve impulse conduction? - ANS Nerve fiber has resting potential by diffusion of Na and K down their concentration gradients. What is the second step in nerve impulse conduction? - ANS Neurons receive stimulation, causing local potentials which may reach threshold. What is the third step in nerve impulse conduction? - ANS Sodium channels in a local region of the membrane open. What is the ...

AMCA EKG - Practice Exam New Questions 2024 with 100% Correct Answers | Verified | Latest Update | 100% Pass | Already Graded A+ what is the most accurate method for acquiring heart rate? 1500 method As an impulse moves toward a positive electrode it produces what type of deflection? upward on ECG papers horizontal measurements are used to determine what? heart rate the initiation of the impulse in the SA Node and its movement through the atria produce? P-wave repolarization of the ventric...

1. Which of the following best describes the reaction NaNO3 + HCl ’ HNO3 + NaCl?: exchange reaction 2. The function of the association area in the frontal lobe is: higher intellectual processes, such as reasoning and judgment. 3. Cerebrospinal fluid is produced by __________ and it __________.: choroid plexuses in the ventricles; protects the brain from blows to the skull 4. The anaerobic reactions of cellular respiration occur in the __________ , whereas the aerobic reactions of cellul...

Small, charged molecules can cross the cell membrane through ____. mitochondria diffusion ribosomes protein channels - ANSWERProtein channels What do neurons have that other cells do not? a plasma membrane large, branching extensions an endoplasmic reticulum protein channels - ANSWERlarge, branching extensions What type of glial cells myelinate axons in the brain and spinal cord? astrocytes oligodendrocytes radial glia Schwann cells - ANSWERoligodendrocytes As a general rule...

AQA A-level BIOLOGY 7402/3 Paper 3 Question Paper + Mark scheme [MERGED] June 2022 *jun* IB/M/Jun22/E10 7402/3 For Examiner’s Use Question Mark 1 2 3 4 5 6 TOTAL Time allowed: 2 hours Materials For this paper you must have: • a ruler with millimetre measurements • a scientific calculator. Instructions • Use black ink or black ball-point pen. • Fill in the boxes at the top of this page. • Answer all questions in Section A. • Answer one question from Secti...

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...

GALEN A&P NU-110 EXAM 4 LATEST QUESTIONS WITH COMPLETE SOLUTIONS 2024/2025 VERIFIED GRADED A+ The Central Nervous System (CNS) Includes the brain and the spinal cord The Peripheral Nervous System (PNS) includes the nerves that connect the Central Nervous system with the rest of the body What are the 2 parts of nervous tissue Glia Cells, and neurons. Glia cell are support cells of the brain astrocytes, microglia, oligodendrocytes Astrocytes makes the blood brain barrier. Connects to ...

Neurophysiology of Nerve Impulses. Physioex 3 1. Explain why increasing extracellular K+ reduces the net diffusion of K+ out of the neuron through the K+ leak channels. - correct answer Increasing the extracellular K+ reduces the steepness of the concentration gradient and so less K+ diffuses out of the neuron. 2. Explain why increasing the extracellular K+ causes the membrane potential to change to a less negative value. - correct answer The membrane potential became less negative because l...

Analgesics-concept labSomatosensory system - correct answer sensory network that monitors the surface of the body and its movements the nervous system consists of two parts - correct answer central and peripheral CNS (central nervous system) - correct answer brain and spinal cord PNS (peripheral nervous system) - correct answer cranial nerves ( all the nerves outside of the brain) and spinal nerves what is the nervous system responsible for ? - correct answer the receipt of external ...