Answers | Complete Nursing Review & Exam Prep |
Newest 2026 || MOST RECENT EXAM 2026|2027 ACTUAL
COMPLETE REAL EXAM QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS) ALREADY GRADED
A+ | GUARANTEED SUCCESS!! NEWEST EXAM | JUST
RELEASED!!
Which cellular change is most likely to occur when a tissue experiences
prolonged inadequate oxygen delivery?
A. Increased ATP production through oxidative phosphorylation
B. Decreased ATP production and failure of the sodium-potassium
pump
C. Increased protein synthesis and cellular growth
D. Enhanced mitochondrial energy production
Answer: B. Decreased ATP production and failure of the sodium-
potassium pump
Rationale: Oxygen is essential for efficient ATP production through
oxidative phosphorylation. When oxygen delivery becomes inadequate,
ATP levels fall, impairing energy-dependent processes such as the
sodium-potassium pump. Sodium and water then accumulate inside
cells, causing cellular swelling. If the oxygen deprivation persists,
irreversible injury and cell death may occur.
,Which type of cellular adaptation involves an increase in the size of
individual cells, resulting in enlargement of an organ?
A. Hyperplasia
B. Metaplasia
C. Dysplasia
D. Hypertrophy
Answer: D. Hypertrophy
Rationale: Hypertrophy is an increase in the size of individual cells,
which can enlarge an organ or tissue. It commonly occurs in skeletal
muscle in response to resistance training and in the myocardium when
the heart must pump against increased pressure. Hyperplasia involves
an increase in cell number, whereas metaplasia involves replacement of
one differentiated cell type with another.
A patient develops redness, warmth, swelling, and pain around a skin
wound. Which mechanism primarily causes the increased blood flow to
the injured area?
A. Vasodilation of local blood vessels
B. Decreased capillary permeability
C. Suppression of inflammatory mediators
D. Constriction of arterioles
Answer: A. Vasodilation of local blood vessels
,Rationale: During acute inflammation, mediators such as histamine and
nitric oxide promote vasodilation, increasing blood flow to the affected
tissue. This produces redness and warmth. Increased vascular
permeability allows fluid and proteins to enter the interstitial space,
contributing to swelling. Chemical mediators and pressure from
swelling can stimulate nerve endings and produce pain.
Which laboratory finding is most directly associated with a systemic
inflammatory response?
A. Decreased C-reactive protein
B. Reduced erythrocyte sedimentation rate
C. Elevated C-reactive protein
D. Decreased production of acute-phase proteins
Answer: C. Elevated C-reactive protein
Rationale: C-reactive protein (CRP) is an acute-phase protein produced
by the liver in response to inflammatory cytokines, particularly
interleukin-6. Its concentration often rises during infection, tissue
injury, and inflammatory disease. An elevated CRP supports the
presence of inflammation but does not identify its exact cause or
establish a specific diagnosis.
Which statement best describes apoptosis?
A. It always causes extensive inflammation in surrounding tissues.
B. It is a regulated form of cell death that usually preserves surrounding
tissue integrity.
, C. It occurs only after severe bacterial infections.
D. It results exclusively from physical destruction of the cell membrane.
Answer: B. It is a regulated form of cell death that usually preserves
surrounding tissue integrity.
Rationale: Apoptosis is programmed, regulated cell death that removes
damaged, unnecessary, or potentially harmful cells. The cell shrinks, its
DNA is fragmented, and cellular components are packaged into
apoptotic bodies for removal. Because the cell membrane generally
remains intact until the material is cleared, apoptosis typically causes
less inflammation than necrosis.
Which immune cell is primarily responsible for producing antibodies
after differentiating into a plasma cell?
A. Neutrophil
B. Natural killer cell
C. Eosinophil
D. B lymphocyte
Answer: D. B lymphocyte
Rationale: Activated B lymphocytes can differentiate into plasma cells,
which produce antibodies directed against specific antigens. Antibodies
help neutralize pathogens and toxins, promote phagocytosis, and
activate the complement system. Some activated B cells become memory
cells, allowing a faster response to subsequent exposure to the same
antigen.