What catches inhaled particles in the trachea?
Mucus
Epithelial cells
Paranasal sinuses
Cilia
The Correct Answer is A
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Blood pumped into a ventricle in one minute: This describes venous return but not cardiac output.
B. Blood pumped into the atria in one minute: Cardiac output measures blood leaving the heart, not entering the atria.
C. Blood pumped by each ventricle in one minute: Cardiac output is the amount of blood ejected by each ventricle in one minute. It is calculated by multiplying stroke volume (the amount of blood ejected per beat) by heart rate.
D. Blood pumped out of an atrium in one minute: This describes atrial function but is not related to the definition of cardiac output.
Correct Answer is A
Explanation
A. Cecum: The cecum is the first part of the large intestine, where fluids and salts are absorbed after digestion in the small intestine.
B. Ascending colon: The ascending colon continues the process of absorbing water and salts but starts after the cecum.
C. Rectum: The rectum stores feces and plays little role in fluid and salt absorption.
D. Descending colon: While the descending colon absorbs water, much of the absorption occurs earlier in the large intestine, primarily in the cecum.
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