In the mammalian body, this element plays many important roles. Try to identify this element with the fewest number of clues. This element is required to insure the integrity and permeability of cell membranes, to regulate nerve and muscle excitability, to help maintain normal muscular contraction, and to assure cardiac rhythmicity. It also plays a essential role in several of the enzymatic steps involved in blood coagulation and is the most important element of bone salt. Name this element.

In the mammalian body, this element plays many important roles. Try to identify this element with the fewest number of clues. This element is required to insure the integrity and permeability of cell membranes, to regulate nerve and muscle excitability, to help maintain normal muscular contraction, and to assure cardiac rhythmicity. It also plays a essential role in several of the enzymatic steps involved in blood coagulation and is the most important element of bone salt. Name this element.
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1 Answer

Answer :

ANSWER: Calcium 
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Description : I will be describing a chemical element. Try to identify it with the fewest number of clues. This chemical element is the most abundant of the rare-earth group. The element is a silver-gray metal ... factor in color television tubes. The atomic number of this element is 58. What is this element?

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An important function of vitamin A is (A) To act as coenzyme for a few enzymes (B) To play an integral role in protein synthesis (C) To prevent hemorrhages (D) To maintain the integrity of epithelial tissue

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Increase in the excitability of nerves and muscles leading to sustained contraction of the muscles of laryx, face, hand and feet is due to

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The extra embryonic membranes of the mammalian embryo are derived from (a) trophoblast (b) inner cell mass (c) formative cells (d) follicle cells

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Of the four traditional roles of an artist as cited in your textbook, specifically identify which of those traditional roles was the most important for Warhol in creating the artwork depicted in Fig. 1-29, page 27 Explain why you chose that role?

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The following points about microfilaments are true except (A) They form cytoskeleton with microtubules (B) They provide support and shape (C) They form intracellular conducting channels (D) They are involved in muscle cell contraction

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"Sodium Pump" operates in - (1) Muscle contraction (2) Heart beat (3) Nerve impulse (4) None of the above

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The mechanism by which neostigmine improves contraction of myasthenic muscle involves: A. Repetitive binding of the acetylcholine molecules to the same receptors at the muscle endplate B. Diffusion of acetylcholine released from motor nerve endings to a wider area activating neighbouring receptors C. Activation of motor end-plate receptors by neostigmine molecules themselves D. All of the above

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“Sodium Pump” operates in (1) Muscle contraction (2) Heart beat (3) Nerve impulse (4) None of the above

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Angiotensin II plays a key role in the following risk factor for ischaemic heart disease: A. Hypercholesterolemia B. Ventricular hypertrophy C. Carbohydrate intolerance D. Cardiac arrhythmia

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Which of the following statements are true of oxidants? A. In addition to their pathophysiologic roles in inflammation, injury, and infection, oxidants also have physiologic roles. B. Oxidants may be generated from activated neutrophils and during reperfusion following a period of ischemia. C. The deleterious effects of oxidants include lipid peroxidation and cell membrane damage, oxidative damage to DNA, and inhibition of adenosine triphosphate (ATP) synthesis. D. The mechanism of ischemia-reperfusion injury involved the catalytic production of superoxide anion (O 2•) by the enzyme xanthine oxidase.

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With respect to lipoprotein transport and metabolism in the body, the following statements are correct EXCEPT: 1) Arterial walls contain cells with LDL receptors. 2) Cholesterol is required for the formation of red blood cell membranes. 3) Chylomicrons are synthesized in the liver. 4) HDL is assembled in the extracellular space. 5) VLDL transformation to LDL occurs in adipose tissue.

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The most significant nursing problem related to continuous tube feedings is a) potential for aspiration Because the normal swallowing mechanism is bypassed, consideration of the danger of aspiration must be foremost in the mind of the nurse caring for the patient receiving continuous tube feedings. b) interruption of GI integrity Tube feedings preserve GI integrity by intraluminal delivery of nutrients. c) disturbance in the sequence of intestinal and hepatic metabolism Tube feedings preserve the normal sequence of intestinal and hepatic metabolism. d) interruption in fat metabolism and lipoprotein synthesis Tube feedings maintain fat metabolism and lipoprotein synthesis.

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Last Answer : a) potential for aspiration Because the normal swallowing mechanism is bypassed, consideration of the danger of aspiration must be foremost in the mind of the nurse caring for the patient receiving continuous tube feedings.

Electrolytes are especially essential to which cells. a. nerve b. muscle c. both d. none of them

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Last Answer : muscle

In the neurones: a. the axons convey impulse away from the cell body b. neurotransmitters are synthesized in the cell bodies and then transported to the axons c. the condition velocity increases with fibre diameter d. the excitability is increased if the extracellular calcium concentration is decreased

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Last Answer : the axons convey impulse away from the cell body

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Which of the following tissues contain significant collagen useful for placing sutures to allow the prolonged tension necessary to maintain tissue approximation? a. Dermis b. Intestinal submucosa c. Muscular fascia d. Blood vessel wall

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Which of the following statements reflect nursing interventions of a patient with post-polio syndrome? a) Providing care aimed at slowing the loss of strength and maintaining the physical, psychological and social well being of the patient. No specific medical or surgical treatment is available for this syndrome and therefore nursing plays a pivotal role in the team approach to assisting patients and families in dealing with the symptoms of progressive loss of muscle strength and significant fatigue. Nursing interventions are aimed at slowing the loss of strength and maintaining the physical, psychological and social well being of the patient.

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Actions of bradykinin include the following except: A. Fall in blood pressure B. Cardiac depression C. Increase in capillary permeability D. Bronchoconstriction

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The following diagram (Figure 20, 35) describes the muscle contraction . Identify A to D

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Concerning their permeability how are membranes classified ?

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The following are true about blood coagulation: a. heparin inhibits blood coagulation through its interference with vitamin K metabolism in the liver b. addition of vitamin K to freshly drawn blood delays clotting c. thrombin converts fibrinogen to fibrin d. platelets are essential for blood clot

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