## Quiz Question: Pain-Relief Substances**Question:**Which of the following statements about pain-relief substances is correct?**Options:**- Endorphins are synthetic pain-killers.- Met-enkephalin has pain-killing ability because of its structural similarity to morphine.- Many natural pain-killing polypeptides are ideal for medical use.- Receptors of opium derivatives are found in all body cells.*Note: Click "View Available Hint(s)" for additional information.***Action:**- Click "Submit" once your answer is selected.

Pain is described as an uncomfortable sensation that occurs in the body. It is a signal in the…

Answered: Which of the following statements about…

Phlebotomy Essentials

6th Edition

ISBN:9781451194524

Author:Ruth McCall, Cathee M. Tankersley MT(ASCP)

Publisher:Ruth McCall, Cathee M. Tankersley MT(ASCP)

Chapter1: Phlebotomy: Past And Present And The Healthcare Setting

Section: Chapter Questions

Problem 1SRQ

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List down the substances in which both specific and optical rotation are needed to be measured. And which isomer of those substances has pharmacological activity.
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What is the significance of the blue regions of the following molecule? Me Me Me H oppo Me steroid skeleton O Me Me None of the answers O They are prone to metabolism, thus limiting the lifetime of the drug O They introduce a dipole moment to the molecule allowing the correct alignment of binding groups when the molecule binds to the binding site O They represent the skeleton of acetylcholine O They are polar groups that increase water solubility
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39 of 41 Which of the following statements best describes autocrine signalling? O A cell communication mechanism in which the signalling molecules bind to receptors located on the cell secreting the signalling molecules. A cell communication mechanism in which the signalling molecules bind to receptors located on adjacent cells. O A cell communication mechanism in which the signalling molecules are released into the circulatory system to bind to receptors located on cells in tissues some distance away. A cell communication mechanism in which the signalling molecules are peptide hormones. A cell communication mechanism in which the signalling molecules are steroid hormones.
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A contributing factor to the development of arthritis is the inappropriate proteolytic destruction of the aggrecan component of cartilage by the proteolytic enzyme aggrecanase. The immune system signal molecule interleukin 2 (IL-2) activates aggrecanase; in fact, IL-2 blockers are sometimes used to treat arthritis. Studies were undertaken to determine whether inhibitors of aggrecanase could counteract the effects of IL-2. Pieces of cartilage were incubated in media with various additions and the amount of aggrecan destruction was measured as a function of time. What is the effect of adding IL-2 to the system? Aggrecan degradation remains the same. Aggrecanase activity is greatly reduced. Aggrecan degradation is greatly reduced. Aggrecan degradation is greatly enhanced. What is the response when an aggrecanase inhibitor is added in addition to IL-2? O Aggrecan degradation remains the same as when IL-2 was added. Aggrecan degradation completely stops. Aggrecan degradation is reduced to…
nicotine from cigarette smoke acts as a lignad and associated with specific proteins on the surface of cells in the brain, causing felings of pleasure nad well being. What is the appropriate event in the cellular response to nicotine Rapid elimination of nicotine from the body is an example of: 1. receptor binding 2. signal termination 3. recepto activation 4. signal transduction 5. cellular response
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Why is it that muscarinic ACh receptors can depolarize some cells and hyperpolarize others? There are different muscarinic ACh receptor subtypes - they are ionotropic receptors and activate different signaling pathways. O There are different muscarinic ACh receptor subtypes - they are ionotropic receptors and open different ion channels. There are different muscarinic ACh receptor subtypes - they are metabotropic receptors and activate different signaling pathways. There are different muscarinic ACh receptor subtypes - they are metabotropic receptors and open different ion channels. None of the above - muscarinic ACh receptors can only depolarize cells

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