A patient with chronic renal failure is undergoing hemodialysis.
What process allows for the removal of waste products and excess fluid from the patient's bloodstream during hemodialysis?
Active transport.
Osmosis.
Diffusion.
Facilitated diffusion.
The Correct Answer is C
During hemodialysis, waste products and excess fluids are removed from the blood by diffusion 1.
Diffusion is a separation process in which particles that are dissolved in a solution are relocated from an area of higher concentration in the blood to an area of lower concentration in the dialysate.
Choice A.
Active transport is incorrect because active transport is a process that uses energy to move molecules against a concentration gradient.
Choice B.
Osmosis is incorrect because osmosis is the movement of water molecules across a semipermeable membrane from an area of higher water concentration to an area of lower water concentration.
Choice D.
Facilitated diffusion is incorrect because facilitated diffusion is a process where molecules move down their concentration gradient with the help of carrier proteins.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Using a placebo group and a double-blind technique for giving the medications is the best way to ensure that the study is valid and reliable.
A placebo group helps control for the placebo effect, which can influence the results of a study.
A double-blind technique means that neither the patients nor the researchers know which medication is being given, reducing bias.
Choice A is not the best answer because while a large sample size and standardized procedure can increase reliability, they do not address validity.
Choice C is not the best answer because a matched-pairs design and crossover technique are useful for reducing variability but do not address validity.
Choice D is not the best answer because a convenience sample may not be representative and a pretest-posttest design does not control for extraneous variables.
Correct Answer is A
Explanation
The normal flora refers to the microbial community that colonizes on the skin and mucus membrane.
Normal flora can be found in many human body sites, including the skin, respiratory tract, urinary tract, and digestive tract.
Choice B is incorrect because normal flora does not refer to a group of infectious parasites that cause diarrheal diseases.
Choice C is incorrect because normal flora does not refer to the genetic material of bacteria housed within a true nucleus.
Choice D is incorrect because normal flora does not refer to the protein coat surrounding the viral genome.
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