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Physiology
The pharyngeal stage of deglutition involves involuntary contraction of the pharyngeal muscles and is responsible for the rapid passage of the food bolus from the oral cavity to the upper esophagus. It is primarily a reflex act triggered by the vo
General Pathology
Cytokeratin positivity in an undifferentiated malignant tumor suggests that the tumor is likely a carcinoma, as cytokeratins are markers for epithelial cells.
Physiology
Answer: 2) Broca's area is located in the inferior frontal gyrus and is involved in motor speech, while Wernicke's area is located in the superior temporal gyrus and is associated with language comprehension.