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. Eosinophil cell: Eosinophils are granular leukocytes involved in allergic reactions and parasitic infections.
B. Polymorphonuclear cell: This refers to neutrophils, which are granular leukocytes with multi-lobed nuclei.
C. Monocyte cell: Monocytes are agranular leukocytes that can differentiate into macrophages and are involved in phagocytosis.
D. Basophil cell: Basophils are also granular leukocytes involved in immune responses and releasing histamine.
Correct Answer is A
Explanation
A. Progesterone: During the luteal phase, the corpus luteum produces the highest levels of progesterone, which is crucial for preparing the uterine lining for potential implantation.
B. LH: Luteinizing hormone (LH) peaks just before ovulation, not during the luteal phase.
C. FSH: Follicle-stimulating hormone (FSH) is primarily active during the follicular phase and has lower levels during the luteal phase.
D. Estrogen: While estrogen levels do rise during the luteal phase, they do not peak as high as progesterone does.
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