Following an injury you want to "wall off" the area. What inflammatory response could achieve this result?
edema
vasodilation of blood vessels
formation of a clot
all of the above
The Correct Answer is C
A. edema
Edema involves fluid accumulation and can contribute to swelling and immune cell movement, but it does not directly wall off the injury site.
B. vasodilation of blood vessels
Vasodilation increases blood flow to bring immune cells and nutrients, but does not physically isolate the injury.
C. formation of a clot
A blood clot forms a physical barrier that helps prevent the spread of pathogens and walls off the injury.
D. all of the above
While A and B support inflammation and healing, only C directly achieves the goal of physically walling off the injured area. Therefore, "all of the above" is in
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. neutrophils and macrophages are summoned to the area
This is an early step in the inflammatory phase to remove pathogens and debris.
B. blood fills the wound and a clot is formed
This occurs immediately after injury to stop bleeding and initiate repair.
C. granulation tissue is converted into connective tissue
This is part of the remodeling phase-the final stage-where the new tissue is matured and replaced with stronger connective tissue.
D. fibroblasts move in from surrounding connective tissue
This occurs during the proliferative phase, earlier than the final remodeling phase.
Correct Answer is D
Explanation
A. growth hormone
Deficiency in GH during childhood leads to dwarfism or delayed growth, so it’s definitely a suspect in short stature.
B. thyroid hormone
Thyroid hormone plays a critical role in metabolism and skeletal growth. Its deficiency can cause growth delays.
C. sex hormones
Estrogen and testosterone influence growth plate closure and stimulate growth during puberty. Imbalance can lead to short stature or delayed puberty.
D. calcitonin
Calcitonin helps regulate calcium levels, but it has a minor role in growth. Deficiency or excess does not cause short stature.
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