Which of the following accurately describes the role of insulin in glucose metabolism?
Insulin increases blood sugar levels by promoting glucose uptake into cells.
Insulin decreases blood sugar levels by promoting glycogen breakdown in the liver.
Insulin decreases blood sugar levels by promoting glucose uptake into cells.
Insulin increases blood sugar levels by inhibiting glycogen synthesis.
The Correct Answer is C
Insulin plays a key role in glucose metabolism by facilitating the uptake of glucose into cells, reducing blood sugar levels. It also promotes glycogen synthesis in the liver and muscle cells.
Incorrect choices:
a. This choice is incorrect. Insulin promotes glucose uptake into cells, leading to decreased blood sugar levels.
b. This choice is incorrect. Insulin promotes glycogen synthesis, which stores glucose and reduces blood sugar levels.
d. This choice is incorrect. Insulin promotes glycogen synthesis, contributing to the storage of glucose and lowering blood sugar levels.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Diabetic retinopathy is a complication of diabetes mellitus that affects the blood vessels of the retina, leading to vision impairment and potential blindness. It is a result of prolonged high blood glucose levels damaging the small blood vessels in the eye.
Incorrect choices:
a. This choice is incorrect. Diabetic ketoacidosis (DKA) is an acute complication characterized by high blood glucose levels, ketosis, and metabolic acidosis.
b. This choice is incorrect. Diabetic nephropathy is a chronic complication that affects the kidneys and can lead to impaired kidney function.
c. This choice is incorrect. Diabetic neuropathy refers to nerve damage due to diabetes and can cause symptoms such as tingling, pain, and loss of sensation in the extremities.
Correct Answer is A
Explanation
Excessive thirst and frequent urination are classic symptoms of hyperglycemia in diabetes mellitus. These symptoms result from the body's attempt to eliminate excess glucose through urine.
Incorrect choices:
b. This choice is incorrect. Bradycardia and low blood pressure are not classic symptoms of hyperglycemia; they may be associated with other conditions.
c. This choice is incorrect. Weight gain and increased appetite are not typical symptoms of hyperglycemia; they may be observed in certain situations, but they are not characteristic of uncontrolled diabetes.
d. This choice is incorrect. Hypoglycemic episodes with confusion are symptoms of low blood sugar, not hyperglycemia.
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