No the time between the R wave and the lub sound is not necessarily consistent. There may be potential delays caused by weak blood flow‚ delay in ventricular conduction and the integrity of the actual valves. Hence‚ the time between the R wave and lub sound are not necessarily consistent. 3. The dub sound is caused by the closing of the semi lunar valves due to the relaxation of the ventricles and the drop
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Lidocaine is also used to relieve itching‚ burning and pain from skin irritation and inflammation. It works by blocking the pain signals sent by the nerve endings on the skin‚ changes signal conduction in neurons by blocking sodium channels. ~Morphine is a very potent drug that is used to relieve severe pain. It can relieve pain by silencing nerves in the spine that produce pain signals‚ morphine also has complex effects in the brain. Morphine can also be very addiction. ~Ketamine is an injection
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D. DRUG STUDY Drug | Dosage‚ Frequency and Route | Action | Classification | Indication | Contraindication | Adverse Effects | Nursing Responsibilities | Generic Name:Hyoscine-N-butylbromideBrand Name:Buscopan | 1 amp q2 IV | * Hyoscine works by relaxing the muscle that is found in the walls of the stomach‚ intestines‚ bowel‚ bile duct and urinary tract. * Hyoscine stops the spasms in the smooth muscle by preventing acetylcholine from acting on the muscle. * hyoscine reduces the muscle
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The cardiovascular system consists of : heart (심장)‚ and vessels (혈관)‚ arteries (동맥)‚ capillaries (모세혈관) and veins (정맥). A functional cardiovascular system is vital (필수적인) for supplying oxygen and nutrients to tissues and removing wastes from them. Paths of Circulation: Pulmonary(폐의) Circuit : carrying blood to the lungs and back 1. The pulmonary circuit is made up of vessels that convey blood from the right ventricle to the pulmonary arteries to the lungs‚ alveolar capillaries‚ and pulmonary veins
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to maintain neuromuscular irritability for conduction of nerve impulses‚ regulation of acid-base balance (through sodium bicarbonate and sodium phosphate)‚ participation in cellular chemical reactions and membrane transport. * Potassium: K+ 3.5-5.0 mmol/L: Potassium maintains the osmotic balance of the ICF space. Potassium is the major intracellular electrolyte and contributes to many important cellular functions including the transmission of nerve impulses. As the predominant ICF ion‚ it
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Spinal Cord Motor Activity Classification of Reflexes " 1- Somatic reflexes : that you are aware of them 2- Autonomic Reflexes : that control visceral organs. Examples of spinal reflexes‚ involving spinal nerves and the spinal cord‚ include: 1- extensor reflex: leg proprioceptors trigger limb extension 2- myotatic (stretch) reflex: muscle stretch is resisted by reflex contraction of the muscle 3- withdrawal (flexion) reflex: limb flexes to withdraw from a noxious stimulus
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drug that causes reversible local anesthesia‚ generally for the aim of having a local analgesic effect‚ that is‚ inducing absence of pain sensation‚ although other local senses are often affected as well. Also‚ when it is used on specific nerve pathways (nerve block)‚ paralysis (loss of muscle power) can be achieved as well. Clinical local anesthetics belong to one of two classes: * Amino amide local anesthetics‚ and * Amino ester local anesthetics. Synthetic local anesthetics are structurally
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ENGINEERING LAB 1 (MEC 2700) LABORATORY MANUAL JULY 2007 Table of Contents Experiment 1: Heat Capacity of Gases Experiment 2: Thermal and Electrical Conductivity of Metals Experiment 3: Heat Pump Experiment 4: Heat Conduction Experiment 5: Free and Forced Convection Experiment 6: Thermal Radiation Experiment 1: Heat Capacity of Gases 1. BACKGROUND The first law of thermodynamics
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SCIENCE RATIONALE This syllabus is prepared with a view to address new trends in integrated science teaching and science teacher education. Science has gained world-wide acceptance as a course of study for various reasons such as the concern for social relevance and environmental issues. The teacher is seen‚ as the key to the success of the Educational Reform in Zambia and the effective implementation of the science curriculum will thus depend on the commitment‚ competence and resourcefulness
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environment by radiation‚ conduction‚ convection and evaporation of water. These are all physical mechanisms known to the human body. (Vander‚ Sherman & Luciano 1998). Radiation is an infrared energy between two objects that have no physical contact with each other. Heat is gained by radiation from the sun‚ hot sand on the beach and hot coal. Heat can also be lost as radiation to cool vegetation‚ water in the sea and snow on the ground. (Seeley‚ Stephens & Tate 2002). Conduction is the exchange of heat
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