Which of the following statements regarding facultative mitotic cells is true?
continually divide throughout life
kidney cells are facultative mitotic cells
replaced by fibrous scarring after trauma
divide when required
Two answers are correct
The Correct Answer is E
A. continually divide throughout life: This describes labile cells (e.g., epithelial cells of skin, GI tract) - not facultative mitotic cells.
B. kidney cells are facultative mitotic cells: Many renal epithelial cells (e.g., tubular cells) are stable/facultative - they do not constantly divide but can re-enter the cell cycle after injury.
C. replaced by fibrous scarring after trauma: If injury is severe and regeneration fails, even facultative cells may be replaced by scar tissue, but this is not the defining property of facultative mitotic cells.
D. divide when required: Correct description of facultative (stable) cells - they remain quiescent normally but divide when needed (e.g., after injury).
E. Two answers are correct: Both B and D are correct statements about facultative mitotic cells.
F. None are correct: Some choices (B and D) are correct.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. thrombocytes: Platelets (thrombocytes) are not the primary target of HIV; they may be affected secondarily but are not the cells destroyed by the virus.
B. CD4: HIV infects and progressively depletes CD4⁺ T helper lymphocytes, which leads to immune deficiency.
C. ESR: ESR (erythrocyte sedimentation rate) is a laboratory test/value, not a cell type, so it cannot be destroyed.
D. CD8: CD8⁺ cytotoxic T cells are not the primary cells infected by HIV; they may be functionally affected but HIV primarily targets CD4⁺ T cells.
Correct Answer is C
Explanation
A. anaplasia: Anaplasia is loss of cellular differentiation and pleomorphism characteristic of malignant cells - not the adaptive replacement seen in chronic irritation.
B. hyperplasia: Hyperplasia is an increase in cell number (often hormonally or compensatorily driven), not a replacement of one cell type by another.
C. metaplasia: Metaplasia is the reversible replacement of one differentiated cell type by another (e.g., columnar ciliated → stratified squamous in smokers’ bronchi) as an adaptive response to chronic irritation.
D. dysplasia: Dysplasia is disordered, atypical growth (abnormal cell morphology/architecture) that can follow metaplasia and may be precancerous, but it describes atypia rather than the cell-type switch.
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