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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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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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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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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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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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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divided by a partition or septum into two halves‚ and the halves are in turn divided into four chambers. The heart is situated within the chest cavity and surrounded by a fluid filled sac called the pericardium. This amazing muscle produces electrical impulses that cause the heart to contract‚ pumping blood throughout the body. The heart and the circulatory system together form the cardiovascular system. Heart Anatomy: Chambers Atria - upper two chambers of the heart. Ventricles - lower two
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found her true love yet she cannot love him as he is a Montague. The themes that can be found in this scene are: love‚ marriage‚ conflict and hate. Love in this scene refers to Romeo meeting Juliet and them instantly falling in love. Marriage in this scene refers to when Paris wants to marry Juliet. Conflict in this scene refers to when Tybalt wants to get Romeo taken out of the Capulet party. Hate in this scene is seen in Capulets party being gate crashed by Romeo Montague and that the families
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cardiac arrhythmia‚ ventricular fibrillation and pulseless ventricular tachycardia. The procedure involves the delivery of an electric shock to the heart which causes depolarisation of the heart muscles and re-establishes normal conduction of the heart’s electrical impulse. The machine used to deliver this therapeutic shock to the heart is called a defibrillator. Defibrillators are key devices in maintaining
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