Veins are called capacitance vessels because:.
They convey blood back to the heart.
They can stretch.
They contain one-way valves.
They can constrict extensively.
The Correct Answer is B
Choice A rationale:
While veins do convey blood back to the heart, this is not the reason they are called capacitance vessels.
Choice B rationale:
Veins are referred to as capacitance vessels because they can stretch and contain about 60% of the body’s blood volume.
Choice C rationale:
Although veins contain one-way valves, this characteristic does not define them as capacitance vessels.
Choice D rationale:
Veins can constrict, but this is not the primary reason they are known as capacitance vessels.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A rationale:
Thoracotomy is a surgical procedure to gain access to the thoracic organs, not specifically for removing air from the pleural space.
Choice B rationale:
A lung biopsy involves removing lung tissue for examination, not removing air from the pleural space.
Choice C rationale:
Lung re-expansion is the goal of the procedure, not the procedure itself.
Choice D rationale:
A chest tube is inserted to remove air from the pleural space and re-establish negative pressure so the lung can re-expand3.
Correct Answer is B
Explanation
Choice A rationale:
While an LH surge does trigger ovulation, it is not the anatomical event of ovulation.
Choice B rationale:
Ovulation is the event when the Graafian follicle ruptures and releases an ovum.
Choice C rationale:
Blood menstrual flow is part of menstruation, which occurs after ovulation if the ovum is not fertilized.
Choice D rationale:
Crampy abdominal pelvic pain can occur with ovulation, but it is not the anatomical event of ovulation.
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