Arteries, veins, and lymphatic vessels keep clots from sticking to the inside as long as their _______ is intact and healthy.
simple cuboidal epithelium
transitional epithelium
mesothelium
endothelium
The Correct Answer is D
A. simple cuboidal epithelium: Simple cuboidal epithelium is commonly found in glands and kidney tubules where secretion and absorption occur. It does not line blood vessels or play a role in preventing clot formation.
B. transitional epithelium: Transitional epithelium is specialized for stretching and is found in the urinary bladder and ureters. It is not present in blood or lymphatic vessels, so it does not influence clot prevention.
C. mesothelium: Mesothelium lines body cavities such as the pleura, peritoneum, and pericardium. Its function is to reduce friction between organs, not to maintain smooth blood flow within vessels.
D. endothelium: Endothelium is the thin layer of simple squamous epithelium lining blood and lymphatic vessels. A healthy endothelium provides a smooth, non-thrombogenic surface that prevents clots from adhering to the vessel wall.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Mature adipose cells are highly mitotic:Mature adipocytes do not actively divide. Instead, new adipocytes are formed from precursor cells, and mature ones primarily increase in size rather than number.
B. Its primary function is to store triglycerides:Adipose tissue serves mainly as an energy reservoir by storing triglycerides. It also provides insulation, cushioning, and contributes to endocrine functions by releasing hormones like leptin.
C. Most of the cell volume is occupied by the nucleus:In adipocytes, the nucleus is pushed to the periphery of the cell by a large lipid droplet. The majority of the cell volume is taken up by stored fat, not the nucleus.
D. It is composed mostly of extracellular matrix:Unlike connective tissues such as bone or cartilage, adipose tissue has relatively little extracellular matrix. The tissue is mainly composed of densely packed fat cells.
Correct Answer is A
Explanation
True:White fat primarily stores energy and provides thermal insulation, cushioning organs and helping regulate body temperature. Brown fat, rich in mitochondria, generates heat by burning lipids through non-shivering thermogenesis, especially important in infants and during cold exposure.
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