What type of tissue forms the walls of the alveoli?
Ciliated columnar epithelium
Simple squamous epithelium
Stratified squamous epithelium
Areolar connective tissue
The Correct Answer is B
A. Ciliated columnar epithelium -Found in bronchi and larger airways.
B. Simple squamous epithelium -Type I alveolar cells form thin walls for efficient gas diffusion.
C. Stratified squamous epithelium -Stratified squamous is protective, found in mouth, esophagus.
D. Areolar connective tissue -Alveoli are not composed of connective tissue; they are lined by squamous epithelium.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Pharynx: The pharynx is the throat region (shared airway/digestive pathway), not the voice box
B. Oral cavity: The oral cavity is the mouth, not the voice box
C. Larynx: The larynx is the anatomical name for the voice box
D. Trachea: The trachea is the windpipe below the larynx, not the voice box
Correct Answer is {"dropdown-group-1":"B","dropdown-group-2":"B"}
Explanation
A. lipase; lipids: lingual lipase (from tongue) begins lipid digestion, but major salivary secretion is amylase, not lipase.
B. amylase; carbohydrates: salivary (ptyalin) amylase begins digestion of starches (carbohydrates) into smaller sugars.
C. pepsin; proteins: pepsin is secreted as pepsinogen by the stomach, not salivary glands.
D. sucrase; sucrose: sucrase is a brush-border (intestinal) enzyme, not a major salivary gland secretion.
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