Which musculoskeletal disorder is caused by the overextension of muscles or tendons, causing the tearing of small vessels and nerve irritation?
Fasciitis
Strain
Bursitis
Tendonitis
The Correct Answer is B
A strain is an injury to a muscle or a tendon that occurs when it is stretched or torn beyond its normal range of motion. Strains can result from overextension of muscles or tendons, such as lifting a heavy object, twisting or bending awkwardly, or performing repetitive motions. Strains can cause bleeding and swelling in the affected area, as well as pain and reduced function.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
The renin-angiotensin system (RAS) is a hormonal system that regulates blood pressure and fluid balance. When blood pressure is low, the kidneys secrete renin, which converts angiotensinogen into angiotensin I, which is then converted into angiotensin II by angiotensin-converting enzyme (ACE). Angiotensin II is a potent vasoconstrictor that narrows blood vessels and increases blood pressure. It also stimulates the release of aldosterone, which increases sodium and water retention and further raises blood pressure. When the RAS is overactivated, it can lead to a hypertensive crisis, which is a severe elevation of blood pressure that can damage organs and cause stroke, heart attack, or kidney failure.
Correct Answer is C
Explanation
Marfan syndrome is a genetic disorder that affects the connective tissue, causing problems with the heart, blood vessels, eyes, bones, and joints. It is caused by a mutation in the FBN1 gene, which encodes for a protein called fibrillin-1. Marfan syndrome follows an autosomal dominant pattern of inheritance, which means that only one copy of the mutated gene is needed to cause the disorder. A person with Marfan syndrome has a 50% chance of passing on the mutated gene to each child, regardless of the gender of the parent or the child.
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