The instructor is reviewing anatomy with a group of students. Which statement accurately describes the regions of the pharynx?
From the lower esophageal sphincter to the duodenum.
From the mucous membranes of the mouth to the tongue.
From the oral and nasal cavities to the esophagus and larynx openings.
From the oral and nasal cavities through the diaphragm to the abdomen.
The Correct Answer is C
A. From the lower esophageal sphincter to the duodenum: That describes sections of the lower GI (distal esophagus → stomach → duodenum), not the pharynx.
B. From the mucous membranes of the mouth to the tongue: This describes parts of the oral cavity; the pharynx is posterior to the oral cavity and includes nasopharynx, oropharynx, and laryngopharynx.
C. From the oral and nasal cavities to the esophagus and larynx openings: The pharynx connects the nasal and oral cavities above to the openings of the esophagus and larynx below (nasopharynx, oropharynx, laryngopharynx).
D. From the oral and nasal cavities through the diaphragm to the abdomen: That would include the esophagus and thoracoabdominal passage through the diaphragm; the pharynx does not extend through the diaphragm.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. It coordinates sensory perception and integration:That is the primary role of the nervous system (sensory integration, not reproduction).
B. It synthesizes hormones for energy metabolism:Endocrine organs (e.g., thyroid, pancreas) are chiefly responsible for metabolic hormone synthesis; while reproductive organs produce sex hormones, their primary system role is reproduction.
C. It ensures the continuation of the species: The main biological function of the reproductive system is to produce gametes and enable fertilization and development, ensuring species propagation.
D. It regulates fluid balance within the body: Fluid/electrolyte balance is primarily regulated by the renal and endocrine systems (kidneys, ADH, aldosterone).
Correct Answer is A
Explanation
A. Type I pneumocytes: The respiratory membrane is formed by alveolar Type I (squamous) pneumocytes, their basement membrane fused with the capillary basement membrane, and capillary endothelial cells -allowing efficient gas diffusion.
B. Respiratory bronchioles: Respiratory bronchioles are airway structures leading to alveoli but are not the cellular layer that composes the thin respiratory membrane.
C. Segmental (tertiary) bronchi: These are larger conducting airways far upstream from the alveolar gas-exchange surface.
D. Type II pneumocytes: Type II cells produce surfactant and are present in alveoli, but the thin gas-exchange surface is primarily Type I pneumocytes (Type II are cuboidal and thicker).
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