A nurse is educating a client about the sympathetic nervous system. Which of the following statements is correct?
The sympathetic nervous system is responsible for "fight or flight."
The sympathetic nervous system helps us to rest and digest.
The sympathetic nervous system Includes the cranial nerves.
The sympathetic nervous system can lower blood pressure.
The Correct Answer is A
A) The sympathetic nervous system is responsible for "fight or flight":
This is the correct answer. The sympathetic nervous system is responsible for the "fight or flight" response, which prepares the body to react to perceived threats or stressors by increasing heart rate, dilating pupils, redistributing blood flow, and releasing stress hormones such as adrenaline and noradrenaline.
B) The sympathetic nervous system helps us to rest and digest:
This statement is incorrect. The parasympathetic nervous system is responsible for the "rest and digest" response, which promotes relaxation, digestion, and conservation of energy.
C) The sympathetic nervous system includes the cranial nerves:
This statement is incorrect. The sympathetic nervous system is primarily associated with the thoracolumbar region of the spinal cord and does not include the cranial nerves, which are primarily associated with the parasympathetic nervous system.
D) The sympathetic nervous system can lower blood pressure:
This statement is incorrect. The sympathetic nervous system typically increases blood pressure as part of the "fight or flight" response by increasing heart rate and constricting blood vessels to redirect blood flow to vital organs and muscles.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["B","C","E"]
Explanation
A) Is it caused by demyelination of the nerve fibers:
Myasthenia gravis is not primarily caused by demyelination of nerve fibers. It is characterized by dysfunction at the neuromuscular junction, specifically involving the acetylcholine receptors.
B) Is it thought to be an autoimmune disease:
This is correct. Myasthenia gravis is considered an autoimmune disorder in which the body's immune system mistakenly targets and attacks its own tissues, particularly the acetylcholine receptors at the neuromuscular junction.
C) It is associated with destruction of acetylcholine receptor sites:
This is correct. In myasthenia gravis, there is a reduction in the number of functional acetylcholine receptors due to autoimmune-mediated destruction or blocking of these receptors.
D) Once symptoms present, it has a 5-year survival rate:
This statement is inaccurate. Myasthenia gravis is a chronic condition, but survival rates are not determined by the onset of symptoms. With appropriate treatment, many individuals with myasthenia gravis can manage their symptoms effectively and have a normal life expectancy.
E) It is a chronic and progressive muscular disease:
This is correct. Myasthenia gravis is a chronic neuromuscular disorder characterized by fluctuating muscle weakness and fatigue. While it is chronic, it is not necessarily progressive in all cases, as symptoms may stabilize or improve with treatment.
F) Is it best treated with antibiotics:
Antibiotics are not the primary treatment for myasthenia gravis. Treatment typically involves medications that enhance neuromuscular transmission, such as acetylcholinesterase inhibitors or immunosuppressive drugs, along with other supportive measures.
Correct Answer is A
Explanation
A) Excretion:
This is the correct answer. The kidneys play a crucial role in the excretion of drugs and their metabolites from the body. After drugs undergo metabolism in the liver or other tissues, the resulting metabolites are often water-soluble and can be filtered by the kidneys into the urine. This process helps eliminate drugs and their byproducts from the body, preventing their accumulation and potential toxicity.
B) Absorption:
Absorption refers to the movement of drugs from the site of administration into the bloodstream. While the kidneys do not directly facilitate drug absorption, they may indirectly influence drug absorption by regulating blood flow and systemic circulation.
C) Metabolism:
Metabolism, or biotransformation, involves the enzymatic alteration of drugs into metabolites, which are often more water-soluble and easier to excrete. While the liver is the primary site of drug metabolism, the kidneys do not play a direct role in drug metabolism.
D) Distribution:
Distribution refers to the movement of drugs from the bloodstream to various tissues and organs in the body. While the kidneys do not directly influence drug distribution, changes in renal function can affect drug distribution by altering blood flow and plasma protein binding. However, the primary role of the kidneys in pharmacokinetics is excretion, not distribution.
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