What triggers the afferent pathways, resulting in the sensation of pain?
Spinal cord
Nociceptors
Endorphins
Cortex
The Correct Answer is B
Choice A rationale:
The spinal cord plays a crucial role in pain transmission, but it does not initiate the afferent pathways. It receives pain signals from nociceptors and relays them to the brain for processing.
The spinal cord is also involved in pain modulation, as it can dampen or amplify pain signals depending on various factors. However, it is not the primary trigger for pain sensation. That role belongs to nociceptors.
Choice B rationale:
Nociceptors are specialized sensory receptors that detect potentially damaging stimuli, such as intense heat, pressure, or chemical irritants.
They are located throughout the body, including the skin, muscles, joints, and internal organs.
When nociceptors are activated, they generate electrical signals that travel along nerve fibers to the spinal cord and brain. This process initiates the afferent pathways, which ultimately lead to the conscious perception of pain.
Nociceptors are essential for protecting the body from harm. They alert us to potential dangers and trigger responses that help us avoid injury or further damage.
Choice C rationale:
Endorphins are natural pain-relieving substances produced by the body. They act on receptors in the brain and spinal cord to reduce pain perception.
However, endorphins do not trigger the afferent pathways. They work by modulating pain signals that have already been initiated by nociceptors.
Choice D rationale:
The cortex is the outer layer of the brain that is responsible for higher-level functions, such as thinking, feeling, and decision- making.
It plays a role in the conscious experience of pain, but it does not trigger the afferent pathways.
The cortex receives pain signals from the spinal cord and processes them, leading to the awareness of pain.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A rationale:
Chronic pain can manifest in various behavioral and physical symptoms, including restlessness, pacing, grimacing, and other facial expressions of pain. These behaviors are often unconscious attempts to cope with or distract from the pain.
They may also reflect the emotional distress that often accompanies chronic pain. Patients may feel frustrated, anxious, or even depressed due to the persistent nature of their pain and its impact on their lives.
It's crucial for nurses to recognize these behavioral signs of pain, as patients may not always readily report their pain verbally. By observing these behaviors, nurses can assess the patient's pain level more accurately and provide appropriate interventions.
Choice B rationale:
Chronic pain is defined as pain that persists for longer than three months, often for much longer. It is not limited and short in duration.
This distinguishes it from acute pain, which is typically associated with an injury or illness and resolves within a few days or weeks.
Choice C rationale:
While some patients with chronic pain may have physical signs of tissue injury, this is not always the case. Chronic pain can also be caused by nerve damage, inflammation, or changes in the central nervous system.
In some cases, the underlying cause of chronic pain may be unknown.
Choice D rationale:
Although chronic pain may not always cause a significant change in vital signs, it can still be a very real and debilitating experience for patients.
Vital signs, such as heart rate, blood pressure, and respiratory rate, are often more sensitive to acute pain.
Nurses should not rely solely on vital signs to assess chronic pain. Instead, they should consider the patient's self-report of pain, behavioral cues, and other factors.
Correct Answer is C
Explanation
Choice A rationale:
Irrigating the tubing with sterile normal saline solution is not a routine part of closed-wound drainage system care.
It's usually only done if there's evidence of a blockage or infection, and only under the direction of a healthcare provider. Unnecessary irrigation could introduce bacteria into the system and increase the risk of infection.
It could also disrupt the delicate balance of fluids in the wound and delay healing.
Choice B rationale:
Replacing the drainage plug after releasing hand pressure on the device is not correct. The drainage plug should actually be replaced before releasing hand pressure.
This is to prevent air from entering the system, which could disrupt the vacuum and impair drainage.
Choice D rationale:
Emptying the reservoir once per day is not frequent enough.
The reservoir should be emptied whenever it becomes full, which could be more often than once a day, depending on the amount of drainage.
Allowing the reservoir to become too full could put pressure on the wound and impede healing.
Choice C rationale:
Fully re-collapsing the reservoir after emptying it is essential to maintain the vacuum that promotes drainage. If the reservoir is not fully re-collapsed, the vacuum will be lost, and drainage will slow or stop.
This could lead to fluid accumulation in the wound, which could increase the risk of infection and delay healing.
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today