Which labeled blood cell is responsible for removing dead or damaged cells?
Monocytes
Lymphocytes
Basophils
Eosinophils
The Correct Answer is D
A. Eosinophil: Eosinophils are involved in allergic reactions and parasitic infections, but they are not responsible for B and T cell functions.
B. Basophil: Basophils are involved in inflammatory responses, particularly releasing histamine, but do not include B or T cells.
C. Monocyte: Monocytes are large white blood cells that develop into macrophages but do not include B or T cells.
D. Lymphocyte: Lymphocytes are a subtype of white blood cells that include B cells (which produce antibodies) and T cells (which are involved in cell-mediated immunity), making this the correct answer.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Uvula: The uvula is a small fleshy extension that helps with speech and prevents food from entering the nasal cavity but is not a lymphoid structure.
B. Palatine tonsils: The palatine tonsils are clusters of lymphoid tissue located at the back of the throat, protecting the pharynx from infections.
C. Hard palate: The hard palate forms the roof of the mouth and aids in chewing but has no immune function.
D. Esophageal sphincter: This is a muscular ring at the junction of the esophagus and stomach, not involved in immune defense.
Correct Answer is B
Explanation
A. Gastrin: Gastrin stimulates gastric acid secretion in the stomach, not pancreatic bicarbonate.
B. Secretin: Secretin stimulates the pancreas to secrete bicarbonate, which neutralizes stomach acid in the duodenum.
C. Somatostatin: Somatostatin inhibits many digestive processes, including the release of digestive hormones, not bicarbonate.
D. Cholecystokinin (CCK): CCK stimulates the release of digestive enzymes from the pancreas but not bicarbonate.
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