Neuropathies are a potential complication of diabetes. Why do these occur?
Thickening and ischemia of the vessels that supply the nerve fibers.
Infection in the nerves.
Excessive glucose exposure to the brain and spinal cord.
Inability to provide continuous glucose to the brain and spinal cord.
The Correct Answer is A
Choice A reason: Neuropathies occur due to the thickening, sclerosis, obstruction, and ischemia of the small blood vessels that supply the nerves (vasa nervorum). Chronic hyperglycemia leads to damage of these blood vessels, reducing blood flow and oxygen supply to the nerves. This ischemia results in nerve degeneration, delayed nerve conduction, and impaired sensory function, which are characteristic of diabetic neuropathy.
Choice B reason: Infection in the nerves is not a primary cause of diabetic neuropathy. While infections can affect the nerves, the neuropathy associated with diabetes is primarily due to vascular complications and chronic hyperglycemia, not infections.
Choice C reason: Excessive glucose exposure to the brain and spinal cord is not directly related to neuropathy. The neuropathic complications in diabetes are due to the damage of peripheral nerves caused by hyperglycemia and vascular insufficiency, rather than glucose affecting the central nervous system.
Choice D reason: Inability to provide continuous glucose to the brain and spinal cord is not a cause of neuropathy. The brain and spinal cord typically have a continuous supply of glucose. Neuropathy in diabetes results from the damage to the peripheral nerves due to prolonged high blood glucose levels and subsequent vascular complications.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A reason: Low white blood cell (WBC) count is not related to the development of diabetes. WBCs are part of the immune system and are involved in fighting infections. Diabetes is primarily associated with issues related to insulin, either its production or the body's response to it.
Choice B reason: Lack of insulin secretion is a primary cause of type 1 diabetes. In type 1 diabetes, the body's immune system attacks and destroys the insulin-producing beta cells in the pancreas. As a result, the body cannot produce insulin, leading to high blood glucose levels. Insulin therapy is required to manage blood glucose levels in individuals with type 1 diabetes.
Choice C reason: Low red blood cell (RBC) count, or anemia, is not a cause of diabetes. RBCs are responsible for carrying oxygen throughout the body. While anemia can occur in individuals with diabetes due to various complications, it is not a direct cause of the condition.
Choice D reason: Resistance to insulin is a primary cause of type 2 diabetes. In type 2 diabetes, the body's cells become resistant to the effects of insulin, making it difficult for glucose to enter the cells. As a result, the pancreas produces more insulin to compensate, but eventually, it cannot keep up with the demand, leading to high blood glucose levels. Lifestyle changes, oral medications, and insulin therapy are often used to manage type 2 diabetes.
Correct Answer is A
Explanation
Choice A reason: Peristalsis is the process by which smooth muscle fibers in the walls of the ureters contract rhythmically to propel urine from the kidneys to the bladder. This coordinated movement involves a wave-like series of contractions and relaxations, ensuring that urine is efficiently transported along the ureters, even against gravity. Peristalsis is a crucial mechanism for maintaining the flow of urine and preventing backflow into the kidneys.
Choice B reason: Mass movement refers to strong, coordinated contractions in the colon that move fecal matter toward the rectum. This process is associated with the large intestine and is not involved in the movement of urine through the ureters.
Choice C reason: Segmental contractions are localized contractions in the intestines that help mix and propel intestinal contents. They are not the primary mechanism for moving urine through the ureters.
Choice D reason: Tetany refers to involuntary muscle spasms or contractions, usually caused by low calcium levels or other electrolyte imbalances. It is not a normal physiological process for propelling urine through the ureters.
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