What is the correct term for blood flow through the lung?
Inspiration
Expiration
Respiration
Perfusion
The Correct Answer is D
A) Inspiration:
Inspiration refers to the process of inhaling or breathing in air into the lungs. It involves the contraction of the diaphragm and expansion of the chest cavity, leading to the intake of air into the lungs.
B) Expiration:
Expiration, also known as exhalation, refers to the process of exhaling or breathing out air from the lungs. It involves the relaxation of the diaphragm and chest muscles, leading to the expulsion of air from the lungs.
C) Respiration:
Respiration is a broader term that encompasses both ventilation (the mechanical process of breathing) and gas exchange (the exchange of oxygen and carbon dioxide between the lungs and blood). While respiration involves both air movement and gas exchange, it does not specifically refer to blood flow through the lung, which is described by the term perfusion.
D) Perfusion.
Perfusion refers to the circulation of blood through the lung's blood vessels, including the pulmonary arteries and pulmonary capillaries. This process allows for the exchange of gases (oxygen and carbon dioxide) between the blood and the air in the lungs during respiration. Perfusion is essential for oxygenating blood and removing carbon dioxide, which is crucial for maintaining normal cellular function throughout the body.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A) A stuffed animal.
Stuffed animals are often considered one of the most appropriate gifts for hospitalized children. They provide comfort, companionship, and a sense of security during a stressful and unfamiliar time. Stuffed animals can serve as cuddly companions for the child, offering emotional support and helping to alleviate anxiety and loneliness while in the hospital.
B) A plant:
While plants can brighten up a hospital room and add a touch of nature, they may not be the most suitable gift for a hospitalized child. Plants require care and maintenance, which may not be feasible or practical in a hospital setting. Additionally, some hospitals have restrictions on bringing plants into patient rooms due to concerns about allergies or infection control.
C) Flowers:
Flowers are a common gift to brighten someone's day, but they may not be the best choice for a hospitalized child. Some hospitals have policies restricting flowers in patient rooms due to concerns about pollen allergies and infection control. Additionally, flowers have a limited lifespan and require regular maintenance, which may not be practical in a hospital environment.
D) A book:
While reading can be a great way to pass the time and provide entertainment for a hospitalized child, it may not be the most appropriate gift in all cases. The child's age, interests, and current health status should be considered when selecting a book. Additionally, some children may not be in the mood for reading if they are feeling unwell or fatigued. A stuffed animal offers more immediate comfort and companionship.
Correct Answer is ["B","C","E"]
Explanation
A. At high doses, to treat anaphylaxis: Dopamine is not used to treat anaphylaxis. Anaphylaxis is typically managed with medications such as epinephrine, antihistamines, and corticosteroids.
B. At high doses, to increase cardiac output: Dopamine is a medication commonly used in the treatment of shock, particularly in cases of hypotension. At higher doses, dopamine acts as a positive inotrope and increases cardiac contractility, thereby improving cardiac output and increasing blood pressure.
C. At low doses, to cause increased blood flow to the kidneys: At lower doses, dopamine primarily acts on dopaminergic receptors in the renal vasculature, leading to vasodilation of the renal blood vessels and increased renal perfusion. This can help improve renal blood flow and urine output, making it beneficial in cases of renal hypoperfusion or acute kidney injury.
D. At low doses, to treat anaphylaxis: Dopamine is not used to treat anaphylaxis at any dose. Anaphylaxis is managed with medications such as epinephrine, which acts on multiple receptors to reverse the systemic effects of the allergic reaction.
E. To cause vasoconstriction and increase blood pressure: Dopamine can also cause vasoconstriction, particularly at higher doses. This effect is mediated through its action on alpha-adrenergic receptors, leading to peripheral vasoconstriction and an increase in systemic vascular resistance, which in turn helps increase blood pressure.
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