/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Problem 163 The mu opiate receptors in the C... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 6: Problem 163

The mu opiate receptors in the CNS are located in the pain-modulating centers. Continued administration of opiate drugs: 1\. will result in euphoria followed by dysphoria, and physical dependence on the drug. 2\. produces no long-term effects on these receptors. 3\. inhibits nociceptors in the CNS. 4\. causes diaphoresis and increased heart rate and respiratory rate.

Short Answer

Expert verified
Option 1 is correct: Continued opiate administration results in euphoria followed by dysphoria, and physical dependence.

Step by step solution

01

Understanding the Question

Let's analyze the options given and relate them with what opiate drugs do. We know opiate drugs interact with mu opiate receptors in the CNS to produce effects like pain modulation, euphoria, and physical dependence.
02

Analyzing Option 1

Opiate drugs, like morphine, initially cause euphoria but can progress to dysphoria as the drug鈥檚 effects start to wear off, leading to a state of physical dependence. This aligns with known effects of long-term opiate use.
03

Analyzing Option 2

Long-term administration of opiate drugs can lead to receptor downregulation or desensitization, which contradicts the statement that there are 'no long-term effects.' This option is not correct.
04

Analyzing Option 3

Mu opiate receptors modulate pain by affecting the pain pathways in the CNS. However, they do not directly inhibit nociceptors, which are primary sensory neurons. Hence, this statement is not correct.
05

Analyzing Option 4

Opiates generally cause a decrease in the heart rate and respiratory rate due to their depressive effects on the CNS, rather than causing diaphoresis (sweating) and an increased heart rate. Thus, this option is also incorrect.
06

Conclusion

From the analysis, option 1, which states that continued opiate administration results in euphoria followed by dysphoria, and physical dependence, is the most accurate.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91影视!

Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Mu Opiate Receptors
Mu opiate receptors are essential players in how our bodies respond to opioid drugs like morphine. These receptors are found throughout the central nervous system (CNS), particularly in areas that handle our pain responses, which are known as pain-modulating centers. When opioid drugs bind to these mu receptors, they block the sensation of pain, making them powerful tools for pain relief. But there's more to the story than just numbing pain. Understanding their role helps provide insights into how these drugs can also lead to complex effects beyond just pain relief.

  • They are part of a larger family of opioid receptors that include kappa and delta receptors鈥攂ut it's the mu receptors that are mainly responsible for the desirable and undesirable effects associated with opioid use.
  • Interacting with these receptors results in not only pain modulation but can also induce feelings of euphoria, which is why these drugs can be prone to misuse.
Pain Modulation
Pain modulation is a complex process that involves multiple pathways in the brain and spinal cord. Mu opiate receptors play a significant role in this process by adjusting how we perceive pain. When a person takes an opioid, these receptors help dampen the pain signals sent to the brain.

  • This doesn't mean the source of pain is gone, but rather that the brain's interpretation of the pain is altered. This can provide immense relief for someone suffering from acute or chronic pain.
  • By activating these receptors, opiates can interfere with the pain pathways, effectively reducing the intensity and emotional response to pain.
Physical Dependence
Physical dependence is a key concern with prolonged opiate usage. It occurs as the body becomes used to the presence of the drug, leading to withdrawal symptoms if use is suddenly stopped. This dependency develops because the body's natural balance is altered by the constant activation of mu opiate receptors.

  • Over time, the brain adapts to the drug's presence, necessitating more of the substance to achieve the same effect鈥攁 phenomenon known as tolerance.
  • Withdrawal symptoms can include both physical and emotional difficulties, which is why medically supervised detox can be crucial in breaking the dependence safely.
Central Nervous System (CNS)
The central nervous system, consisting of the brain and spinal cord, is the control hub for all activities in the body, including the regulation of pain and emotions. This is where mu opiate receptors play their essential role.

  • These receptors are strategically located in areas that regulate pain and reward, directly influencing how we experience pain and pleasure.
  • When opioids activate mu receptors in the CNS, this can result not only in pain relief but also in altered mood states, such as a sense of euphoria.
  • The impact on the CNS also explains why opiates can affect breathing and heart rate due to their depressant effects.
Euphoria and Dysphoria
Euphoria and dysphoria are emotional states that can be influenced by the use of opiates. Euphoria is characterized by feelings of extreme happiness or pleasure and is often sought after by those using opiates recreationally.

  • Initially, opiates can induce euphoria by flooding the brain's reward system, creating a powerful sense of well-being.
  • However, as the body's tolerance increases, these feelings can diminish, sometimes leading to dysphoria鈥攁 state of unease or dissatisfaction, which can occur when the drug's effects wear off or as a result of prolonged use.
  • This cycle of euphoria and subsequent dysphoria highlights the addictive potential of opioids, where users continue seeking the drug to regain those initial feelings of euphoria.

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

A patient is seen in clinic today and diagnosed with iron deficiency anemia. The physician prescribes iron replacement therapy. When discussing administration of the drug, the nurse must educate the patient that: 1\. if he has trouble swallowing the tablet, he can chew it. 2\. if he forgets his medication for 2 days, he can take the missed doses the next day when he takes that day鈥檚 regular dose. 3\. the medication should be taken 2 hours before or after food. 4\. his anemia will be resolved within 7鈥�10 days.

A 50 milliliter bolus of normal saline fluid is ordered by the physician. He wanted it to infuse in one-half of a hour. The nurse will set the pump rate at: 1\. 100 milliliters per hour for one hour. 2\. 60 milliliters per hour for one-half hour. 3\. 120 milliliters per hour for one hour. 4\. 50 milliliters per hour for one hour.

. When caring for a patient receiving amphoteracin B (Fungizone, Amphocin) what laboratory values should be monitored closely? 1\. potassium and magnesium 2\. sodium and calcium 3\. chloride and BUN 4\. phosphate and serum creatitine

Levothyroxine (Synthroid) is the drug of choice for thyroid replacement therapy in patients with hypothyroidism because: 1\. it is chemically stable, nonallergenic, and can be administered orally once a day. 2\. it is available in a single 25mg tablet making dosing simple. 3\. it is not a prodrug. 4\. it has a short half-life

. A 18-year-old female has had epilepsy since childhood and has been maintained relatively seizure free on antiepileptic drugs (AEDs), including carbamazapine (Tegretol) and phenytoin (Dilantin). Today in clinic she asks you about starting oral contraceptives (OCs) as birth control. You educate her that: 1\. she should not take oral contraceptives because she is too young. 2\. the AEDs she is taking will interact negatively with OCs and could lead to an unplanned pregnancy. 3\. her parents will need to be consulted prior to obtaining the OC prescription. 4\. introducing OCs will likely trigger seizure activity.
See all solutions

Recommended explanations on Biology Textbooks

Substance Exchange

Read Explanation

Biology Experiments

Read Explanation

Cells

Read Explanation

Biological Structures

Read Explanation

Control of Gene Expression

Read Explanation

Genetic Information

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.