Which posture is exhibited by abnormal flexion of the upper extremities and extension of the lower extremities?
Normal.
Decorticate.
Decerebrate.
Flaccid.
The Correct Answer is B
Choice A rationale
Normal posture involves relaxed and symmetrical positioning of the limbs without any abnormal flexion or extension.
Choice B rationale
Decorticate posturing is characterized by abnormal flexion of the upper extremities at the elbows and wrists, and extension of the lower extremities, often indicating damage to the corticospinal tract.
Choice C rationale
Decerebrate posturing involves extension and outward rotation of both the arms and legs, indicating damage to the brain stem, which is more severe than decorticate posturing.
Choice D rationale
Flaccid posture refers to a complete lack of muscle tone and resistance, often seen in severe cases of neurological damage or after a stroke. .
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A rationale
The peripheral nervous system (PNS) consists of all the nerves outside the brain and spinal cord. It transmits signals to and from the central nervous system but does not specifically regulate energy expenditure.
Choice B rationale
The parasympathetic nervous system is part of the autonomic nervous system that promotes "rest and digest" functions, conserving energy by slowing the heart rate and increasing intestinal and gland activity.
Choice C rationale
The sympathetic nervous system is responsible for the "fight or flight" response, which prepares the body to expend energy rapidly in response to perceived threats. It increases heart rate, dilates airways, and mobilizes energy stores.
Choice D rationale
The central nervous system (CNS) consists of the brain and spinal cord. It is responsible for processing information and coordinating bodily functions but does not specifically regulate energy expenditure.
Correct Answer is D
Explanation
Choice A rationale
Roth's spots are retinal hemorrhages with pale centers, indicative of certain systemic conditions, but do not relate to pupil response or parasympathetic effects.
Choice B rationale
One pupil being dilated while the other is normal could indicate a variety of issues, but not specifically a parasympathetic effect. This condition is known as anisocoria.
Choice C rationale
Dilated pupils, or mydriasis, are usually the result of sympathetic stimulation, not a parasympathetic effect, which involves constriction of the pupils.
Choice D rationale
Constricted pupils, or miosis, are a parasympathetic effect typically resulting from increased activity of the parasympathetic nervous system, which reduces pupil size.
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
Report Wrong Answer on the Current Question
Do you disagree with the answer? If yes, what is your expected answer? Explain.
Kindly be descriptive with the issue you are facing.