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 C
Explanation
Choice A rationale:
This response is dismissive of the patient's pain and does not offer any assistance. It also does not acknowledge the patient's concerns about their pain being a normal part of aging.
It's important to validate the patient's experience and offer support, even if the pain level is not severe.
This response could lead to the patient feeling unheard and unsupported, and it could potentially delay necessary treatment.
Choice B rationale:
This response suggests that the patient's pain is not significant enough to warrant treatment unless it worsens. This is not appropriate, as pain is subjective and should be treated based on the patient's individual experience.
Additionally, this response reinforces the patient's belief that pain is a normal part of aging, which may prevent them from seeking treatment in the future.
Choice C rationale:
This response is the best option because it acknowledges the patient's pain, expresses concern, and suggests further investigation.
It is important to rule out any underlying medical conditions that may be causing the pain.
This response also demonstrates to the patient that the nurse is taking their pain seriously and is committed to helping them manage it.
Choice D rationale:
This response acknowledges that pain can be a part of aging, but it also suggests that there may be a specific cause for the patient's pain.
This could lead to the patient feeling anxious or worried about their health.
It is important to investigate the cause of the pain before making any assumptions.
Correct Answer is D
Explanation
The correct answer is Choice D: Cover the client's wound with a moist, sterile dressing.
Choice D rationale: In the case of a client with a bowel protrusion from an abdominal incision, the immediate priority is to protect the exposed bowel and minimize the risk of further damage or infection. Covering the wound with a moist, sterile dressing serves to maintain tissue viability, prevent dehydration, and provide a protective barrier against contamination. This intervention preserves the integrity of the exposed bowel while awaiting further medical or surgical management.
Choice A rationale: Checking the client's vital signs is an essential aspect of postoperative care and may be indicative of the client's overall status, but it is not the first action in the case of bowel evisceration. Immediate attention should be directed towards protecting the exposed bowel, with vital signs being monitored closely thereafter to ensure the client's stability.
Choice B rationale: Informing the client about the need for a return to surgery is an important step in the client's care, as it allows for informed consent and understanding of the situation. However, in this scenario, the priority is to address the immediate issue of bowel exposure and provide initial care to the compromised tissue. Once the exposed bowel is appropriately managed, the client should be informed about the potential need for further surgical intervention.
Choice C rationale: Positioning the client in a supine position with knees flexed may help reduce abdominal tension and minimize further protrusion, but it is not the immediate action to take when faced with bowel evisceration. The initial focus should be on protecting the exposed bowel through the application of a moist, sterile dressing, followed by measures to optimize the client's position and promote tissue integrity.
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