Where is blood pressure the highest?
Superior vena cava
Ascending aorta
Abdominal aorta
Pulmonary trunk
The Correct Answer is B
A. Superior vena cava: The superior vena cava carries deoxygenated blood back to the heart, and pressure here is low.
B. Ascending aorta: The ascending aorta is where blood is ejected from the left ventricle, leading to the highest pressure in the circulatory system.
C. Abdominal aorta: While the pressure is still high in the abdominal aorta, it is lower compared to the ascending aorta.
D. Pulmonary trunk: The pulmonary trunk carries blood to the lungs, and the pressure is lower compared to the systemic circulation.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Mucus: Mucus in the trachea traps inhaled particles like dust, microbes, and debris, preventing them from entering the lungs.
B. Epithelial cells: Epithelial cells line the trachea but do not actively trap particles.
C. Paranasal sinuses: The paranasal sinuses are air-filled spaces in the skull and are not involved in trapping particles in the trachea.
D. Cilia: Cilia move trapped particles out of the trachea toward the pharynx, but the particles are initially caught by mucus.
Correct Answer is C
Explanation
A. Calcium: Calcium reabsorption primarily occurs in the distal convoluted tubule, not the loop of Henle.
B. Drugs: Drug secretion mainly happens in the proximal convoluted tubule.
C. Urea: Urea is secreted by the loop of Henle, especially in the thin descending limb, as part of the concentration of urine.
D. Bicarbonate ions: Bicarbonate is reabsorbed mainly in the proximal convoluted tubule, not secreted by the loop of Henle.
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