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
The correct answer is Choice A: Refer questions to the nursing supervisor.
Choice A rationale: By referring inquiries from other nurses to the nursing supervisor, the nurse maintains patient privacy and upholds healthcare privacy regulations, such as the Health Insurance Portability and Accountability Act (HIPAA). These regulations mandate that patient information should only be disclosed on a need-to-know basis. Referring questions to the nursing supervisor ensures that any information released is managed through the appropriate channels and protects the patient's confidentiality.
Choice B rationale: Transferring calls directly to the patient's room could infringe on their privacy and disrupt their care or rest. It is not the nurse's role to decide if the patient should be disturbed, and doing so may potentially compromise patient care and satisfaction.
Choice C rationale: Acknowledging that the person is a patient on the unit can violate confidentiality rules, as it confirms the individual's presence in the hospital and could lead to speculation about their condition. Nurses must maintain patient privacy by refraining from sharing any information, even if it seems harmless.
Choice D rationale: Contacting the patient's provider does not directly address the issue of handling inquiries from other nurses and could breach confidentiality if the provider discloses information without the patient's consent. Additionally, the provider may not be immediately available, which would delay addressing the inquiries and potentially expose the patient's privacy further.
Correct Answer is C
Explanation
Choice A rationale:
Recapping needles is a dangerous practice that significantly increases the risk of needlestick injuries.
The act of recapping involves directing the sharp end of the needle towards one's hand, creating a high likelihood of accidental puncture.
Even experienced healthcare professionals are susceptible to needlestick injuries during recapping.
Wastebaskets are not designed for the safe disposal of sharps and can easily be punctured, leading to potential exposure to bloodborne pathogens.
Choice B rationale:
While it is true that needles should not be recapped on ABG specimens, this option does not address the broader issue of safe needle disposal in general.
Focusing solely on ABG specimens could lead to the misconception that recapping is acceptable for other types of needles.
Choice D rationale:
Breaking needles in half is not recommended as a standard practice for needle disposal.
This action can create sharp fragments that are difficult to handle and can still cause injuries.
Sharps disposal containers are designed to safely contain intact needles and should be used as the primary method of disposal.
Choice C rationale:
Placing uncapped needles directly into a puncture-proof container is the safest and most recommended practice for needle disposal.
These containers are specifically designed to prevent needlestick injuries by shielding the sharps from accidental contact. They are typically made of hard plastic or metal and are clearly labeled for biohazard waste.
Using puncture-proof containers consistently for all needle disposal significantly reduces the risk of needlestick injuries among healthcare workers.
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