Which of the following blood vessels carries oxygenated blood from the heart to the rest of the body?
Pulmonary veins
Pulmonary arteries
Superior vena cava
Aorta
The Correct Answer is D
A. Pulmonary veins: These vessels return oxygenated blood from the lungs to the left atrium, not to the rest of the body.
B. Pulmonary arteries: These transport deoxygenated blood from the right ventricle to the lungs for oxygenation.
C. Superior vena cava: This large vein delivers deoxygenated blood from the upper body into the right atrium.
D. Aorta: This is the main artery that carries oxygen-rich blood from the left ventricle to systemic circulation.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Glucagon: Raises blood glucose by stimulating glycogenolysis and gluconeogenesis in the liver, so it does not decrease glucose.
B. Cortisol: Increases blood glucose through gluconeogenesis and reducing peripheral glucose uptake during stress.
C. Insulin: Lowers blood glucose by promoting cellular uptake of glucose and stimulating glycogen synthesis and storage.
D. Aldosterone: Regulates sodium and potassium balance in the kidneys and indirectly influences fluid volume, not directly responsible for lowering blood glucose.
Correct Answer is B
Explanation
A. Smooth ER: Involved in lipid synthesis, detoxification, and calcium storage in some cells, not the primary ATP generator.
B. Mitochondria: Organelles that perform oxidative phosphorylation and produce most of the cell’s ATP (energy).
C. Golgi apparatus: Modifies, sorts, and packages proteins and lipids for secretion or delivery to organelles, not energy production.
D. Ribosome: Sites of protein synthesis (translate mRNA), not the main source of cellular energy.
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