The reason blood constantly circulates is because of?.
Low blood viscosity.
Vasoconstriction and dilation.
Pressure gradients.
The beating of the heart.
The Correct Answer is D
Choice A rationale:
Low blood viscosity is not the primary reason blood constantly circulates. It is the heart that creates the pressure increase in arteries that pushes blood through the body.
Choice B rationale:
Vasoconstriction and dilation are not the primary reasons blood constantly circulates. They are mechanisms that help regulate blood flow and pressure, but the constant circulation of blood is due to the beating of the heart.
Choice C rationale:
Pressure gradients play a role in blood circulation, but they are not the primary reason blood constantly circulates. The heart is the organ that creates the pressure increase in arteries that pushes blood through the body.
Choice D rationale:
The beating of the heart is the primary reason that blood constantly circulates throughout the body.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A rationale:
Abdominal thrusts, also known as the Heimlich maneuver, are a first-aid technique used to treat conscious choking victims in which the rescuer delivers thrusts to a patient’s upper abdominal region. This motion pushes air from the lungs up through the throat to dislodge foreign objects and treat upper airway obstructions.
Choice B rationale:
Chest thrusts can also be used if needed. However, they are not the primary method for dislodging a foreign object in someone that is choking.
Choice C rationale:
Chest pumps are not a recognized method for dislodging a foreign object in someone that is choking.
Choice D rationale:
Bowel thrusts are not a recognized method for dislodging a foreign object in someone that is choking.
So, the correct answer is Choice A.
Correct Answer is D
Explanation
Naturally acquired active immunity occurs when the body produces antibodies in response to an infection or vaccine. This is not the case for antibodies passed through the placenta.
Choice B rationale:
Artificially acquired passive immunity involves the injection of antibodies, not the transfer through the placenta.
Choice C rationale:
Innate immunity refers to nonspecific defense mechanisms that come into play immediately or within hours of an antigen’s appearance in the body. This does not describe the process of antibody transfer through the placenta.
Choice D rationale:
Natural passive immunity occurs when antibodies are passed from the mother to the fetus through the placenta. This matches the description in the question.
So, the correct answer is Choice D, after analyzing all choices.
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