A nurse is reviewing the anatomy of the peripheral nervous system (PNS) with a group of nursing students. Which of the following statements by a student indicates a need for further teaching?
The PNS consists of cranial and spinal nerves that connect the CNS to the rest of the body.
The PNS is divided into two subdivisions: the somatic nervous system and the autonomic nervous system.
The PNS controls voluntary movements of skeletal muscles and provides sensory feedback from the skin, joints, and muscles.
The PNS regulates involuntary functions of smooth muscles, cardiac muscles, and glands.
The Correct Answer is D
Choice A reason:
This is a correct statement, as the PNS consists of cranial and spinal nerves that connect the CNS to the rest of the body and transmit sensory and motor signals.
Choice B reason:
This is a correct statement, as the PNS is divided into two subdivisions: the somatic nervous system (SNS) and the autonomic nervous system (ANS).
Choice C reason:
This is a correct statement, as the PNS controls voluntary movements of skeletal muscles and provides sensory feedback from the skin, joints, and muscles through the SNS.
Choice D reason:
This is an incorrect statement, as this is the function of the ANS, which is a subdivision of the PNS. The ANS regulates involuntary functions of smooth muscles, cardiac muscles, and glands through its two branches: the sympathetic nervous system (SNS) and the parasympathetic nervous system (PNS).
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A reason:
This is the correct answer because peripheral neuropathy affects the sensory nerves, which can cause loss of sensation, especially in the distal parts of the body. Diabetes mellitus is a common cause of peripheral neuropathy.
Choice B reason:
This is incorrect because peripheral neuropathy does not affect the motor nerves, which control muscle tone and reflexes. Increased muscle tone and reflexes in the upper limbs are more likely to indicate a central nervous system disorder, such as a stroke or spinal cord injury.
Choice C reason:
This is incorrect because peripheral neuropathy can cause decreased pain perception in any part of the body, not just the hands and fingers. However, this is not a specific finding for peripheral neuropathy, as other conditions can also impair pain perception, such as spinal cord injury or opioid use.
Choice D reason:
This is incorrect because peripheral neuropathy does not affect the autonomic nerves, which control sweating and flushing. Increased sweating and flushing in the face and neck are more likely to indicate a sympathetic nervous system disorder, such as pheochromocytoma or carcinoid syndrome.
Correct Answer is A
Explanation
Choice A reason:
This is the correct answer because Spurling's test is used to diagnose cervical radiculopathy by reproducing radicular pain with neck extension, lateral flexion, and compression. A positive result indicates nerve root compression by a herniated disc, osteophyte, or other lesion.
Choice B reason:
This is incorrect because straight leg raise test is used to diagnose lumbar radiculopathy by reproducing radicular pain with hip flexion and knee extension. A positive result indicates nerve root compression by a herniated disc or other lesion in the lower back.
Choice C reason:
This is incorrect because Tinel's sign is used to diagnose peripheral neuropathy by reproducing tingling or paresthesia with tapping over a damaged nerve. A positive result indicates nerve regeneration or irritation by a scar, tumor, or other lesion.
Choice D reason:
This is incorrect because Phalen's test is used to diagnose carpal tunnel syndrome by reproducing numbness or tingling in the median nerve distribution with wrist flexion for 60 seconds. A positive result indicates median nerve compression by a thickened flexor retinaculum or other lesion in the wrist.
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