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 C
Explanation
Prolonged hyperglycemia in diabetes can lead to the formation of advanced glycation end products (AGEs), which contribute to tissue damage, inflammation, and complications such as neuropathy and nephropathy.
Incorrect choices:
a. This choice is incorrect. Hypoglycemic episodes are associated with low blood sugar, not prolonged hyperglycemia.
b. This choice is incorrect. Increased cellular glucose uptake and energy production would not be consequences of prolonged hyperglycemia; rather, hyperglycemia impairs cellular glucose uptake.
d. This choice is incorrect. Prolonged hyperglycemia leads to insulin resistance, not enhanced insulin sensitivity.
Correct Answer is A
Explanation
Diabetic ketoacidosis (DKA) is an acute complication of diabetes mellitus characterized by high blood glucose levels, the presence of ketones in the urine, metabolic acidosis, dehydration, and electrolyte imbalances. It can lead to life-threatening complications if not treated promptly.
Incorrect choices:
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.
d. This choice is incorrect. Diabetic retinopathy is a complication that affects the blood vessels of the retina and can lead to vision loss.
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