The control system in the body acts in many ways to maintain homeostasis. These homeostasis control systems regulate the function of the cell, integrate the function of different organ systems, and do what else?
Feed cells under tress
Act on invading organisms
Control vital functions
Shut down the body at death
The Correct Answer is C
A) Feed cells under stress:
The primary function of the homeostasis control systems is not to directly "feed" cells under stress, but to regulate internal balance and ensure all systems are functioning optimally, particularly in response to changes in the environment or internal states. "Feeding" or providing nutrients is a broader metabolic process rather than a direct function of the homeostasis control systems.
B) Act on invading organisms:
While the immune system, which plays a role in defending the body against invading organisms, is a part of overall body regulation, homeostasis itself is more concerned with maintaining internal stability. The control systems of the body regulate physiological processes such as temperature, pH, and fluid balance rather than directly targeting external organisms like bacteria or viruses, which would fall under the immune response.
C) Control vital functions:
Homeostasis control systems are integral in maintaining the body's internal environment, ensuring stability for vital functions such as temperature, heart rate, blood pressure, and respiratory rate. These systems help adjust these functions in response to various internal and external stimuli to maintain optimal conditions for survival, making this the most accurate answer.
D) Shut down the body at death:
While the control systems ultimately cease to function at death, the purpose of homeostasis during life is to maintain the balance of bodily functions, not to cause the cessation of life. The homeostatic mechanisms are about maintaining life and health, preventing "shutdown" until the point of death.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A) Norepinephrine: Norepinephrine is a potent vasoconstrictor primarily used in cases of shock to increase blood pressure by constricting blood vessels. However, it does not have a vasodilatory effect on renal blood vessels. Instead, it tends to decrease renal perfusion due to its strong vasoconstrictor properties, which could worsen renal insufficiency.
B) Dopamine: Dopamine is a catecholamine that has a dose-dependent effect on various receptors. At low doses, dopamine specifically acts on dopaminergic receptors in the kidneys, leading to vasodilation of renal blood vessels, which can improve renal perfusion. This makes it particularly useful in treating shock when there is concern about renal insufficiency or reduced kidney function.
C) Acetylcholine: Acetylcholine is a neurotransmitter of the parasympathetic nervous system, not a catecholamine. It is involved in promoting various physiological effects such as slowing the heart rate and stimulating digestive processes, but it does not have a specific role in vasodilation of renal blood vessels or shock management.
D) Enkephalin: Enkephalins are endogenous peptides involved in the regulation of pain and stress responses. They do not have a direct effect on vasodilation of renal blood vessels. Enkephalins are not typically used to treat shock or manage renal insufficiency.
Correct Answer is B
Explanation
A) Stop taking the medication immediately: Abruptly stopping amitriptyline without the guidance of a healthcare provider can cause withdrawal symptoms and other complications. Discontinuing this medication should only be done under medical supervision.
B) Increase fluid intake: Amitriptyline can cause anticholinergic side effects such as dry mouth and constipation. Increasing fluid intake helps manage dry mouth by stimulating salivation and helps alleviate constipation by promoting bowel regularity.
C) Request another antidepressant: While amitriptyline can cause side effects like dry mouth and constipation, switching medications should not be the first step. These side effects are often manageable with lifestyle modifications, such as increasing fluid and fiber intake, and adjustments to the treatment plan can be considered if the symptoms are severe or persistent.
D) Notify the provider: While it is important for the nurse to document and inform the provider about any significant side effects, this instruction alone does not provide immediate relief to the patient. It is more appropriate to first recommend increasing fluid intake, and then the nurse can discuss with the provider if the symptoms persist or worsen.
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