Through which structure does blood flow from the heart to the lungs in the pulmonary circulation?
Left ventricle
Pulmonary artery
Left atrium
Pulmonary veins
The Correct Answer is B
Choice A reason: The left ventricle pumps oxygenated blood into the aorta and then to the rest of the body, not
directly to the lungs.
Choice B reason: The pulmonary artery is the correct answer because it carries deoxygenated blood from the right
ventricle of the heart to the lungs for oxygenation.
Choice C reason: The left atrium receives oxygenated blood from the lungs through the pulmonary veins, so it is not
involved in sending blood to the lungs.
Choice D reason: The pulmonary veins carry oxygenated blood from the lungs to the left atrium, not from the heart
to the lungs.
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Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A reason: Decreased bowel sounds are not typically associated with diarrhea. Diarrhea usually presents with
increased bowel sounds due to hyperactive gastrointestinal motility.
Choice B reason: A rigid abdomen may suggest an acute abdomen that requires immediate medical attention, not a common finding in uncomplicated cases of diarrhea.
Choice C reason: Hypothermia is not a common finding in diarrhea. Fever may occur if the diarrhea is infectious in
origin.
Choice D reason: Dehydration is a common finding in patients with prolonged diarrhea due to excessive loss of fluids
and electrolytes.
Correct Answer is D
Explanation
Choice A reason: The small intestine is not the starting point of the digestive process. It is where most of the digestion and absorption of nutrients occurs after the food has been processed in the stomach.
Choice B reason: The rectum is the final section of the large intestine, where feces are stored before being expelled. It is not involved in the initial stages of digestion.
Choice C reason: The stomach is involved in the early stages of digestion, particularly in the breakdown of proteins, but it is not the starting point. Food enters the stomach after being ingested through the mouth.
Choice D reason: The mouth is the correct starting location for the digestive process. Here, ingestion takes place, and mechanical digestion begins with chewing, while chemical digestion starts with enzymes in the saliva breaking down carbohydrates.
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