potentials and action potentials. 10. Explain how action potentials are generated and propagated along neurons. 11. Define absolute and relative refractory periods. 12. Define saltatory conduction and contrast it to conduction along unmyelinated fibers. The Synapse 13. Define synapse. Distinguish between electrical and chemical synapses by structure and by the way they transmit information. 14. Distinguish
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congestive heart failure. 2. What is third-degree heart block? What would the EKG tracing of someone with third-degree heart block look like? Third-degree block‚ also known as third-degree atrioventricular block is “a cardiac conduction system where there is no conduction through the atrioventricular node” (Budzikowski 2014). The patient will have severe bradycardia with independent atrial and ventricular rates. These patients may suffer from ventricular standstill‚ which
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MUSCULOSKELETAL FRACTURES ● Fracture is a disruption or break in the continuity of the bone structure. ● Traumatic injuries account for the majority of fractures. ● Fractures can be classified as displaced (open) or nondisplaced (closed) depending on communication or noncommunication with the external environment. ● Signs include immediate localized pain‚ decreased function‚ and inability to bear weight or use affected part. Obvious bone deformity may be present. ● Bone goes through eight stages of selfhealing (union)
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except A. Cl B. Na C. K D. Ca 2. What is a life-threatening arrhythmia caused by electrical conduction disturbances? A. Atrial fibrillation B. Ventricular fibrillation C. Ectopic foci D. Premature ventricular contraction 3. A common adverse effect from quinidine overdosage is A. Hypertension B. Tachypnea C. Cinchonism D. Dry mouth 4. Disopyramide produces a _____ in conduction and _____ of the refractory period. A. Increase‚ contraction B. Increase‚ prolongation C. Decrease
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“Not rounding off‚ but opening out.” Comment upon the way the writers of the novel and short story deal with the ending in relation to the whole. In your answer you should refer to two or three novels or short stories you have studied. The end of a short story is as important as the start. Some short stories end abruptly‚ leaving it open for the readers to interpret while others have a moral. In the short story Holiday by Rabindranath Tagore the end is interlinked to the title‚ ‘Holiday’. In
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3: Neurophysiology of Nerve Impulses: Activity 7: The Action Potential: Conduction Velocity Lab Report Pre-lab Quiz Results You scored 100% by answering 5 out of 5 questions correctly. 1. An action potential can be propagated along an axon because there are __________ channels in the membrane. You correctly answered: d. voltage-gated 2. The units of conduction velocity are You correctly answered: d. meters/second. 3. Which of the following will affect axonal conduction velocity? You correctly answered:
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water‚ air‚ energy Diversity of animals…more than 1 million species on earth Unifying themes that apply to all physiological processes Physiological Processes Chemical & Physical Laws Rooted in the laws of physics & chemistry Nerve conduction‚ action potentials & ionic currents Gas exchange Animal locomotion and blood flow Muscle contraction and limb movement Anabolic and catabolic metabolism What is Animal Physiology? (continued) Animal Physiology includes behavior‚
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Pharmacology – NUR09100 PHARMACODYNAMICS Learning outcomes • Describe: o the structure of neurones‚ o conduction of the action potential o synaptic transmission o the principal effects of stimulation of the: sympathetic nervous system and parasympathetic nervous system • Explain and give examples of the following types of drug action: o Receptors (agonists‚ antagonists and partial agonists) o Enzyme inhibition o Membrane transport systems • Apply your knowledge to explain action and
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in the superior lateral wall of the right atrium near the opening of the superior vena cava. The specialized pacemaker cells dictate control of the rest of the heart through regular electrical impulses that propagate from the right atria to the lower ventricles. The rapid conduction of these impulses cause the muscle cells of the atria to contract and squeeze blood into the ventricles‚ which contract and force blood into the aorta and pulmonary arteries. Abnormalities of the heart rhythm‚ called
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this case study‚ the underlying arrhythmia for the patient was determined to be atrial fibrillation (AF). Patient’s last BP measure was 80/50. Will this new diagnosis improve the patient’s BP? Not really. While adenosine may slow the electrical conduction rate of the heart‚ the pathophysiology of AF still creates a problem for a normal BP. AF occurs when multiple irritable foci‚ potentially hundreds‚ from different locations across the atrium‚ all fire at the same time. As a result‚ instead of the
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