The release of insulin is caused by:
Increased lipid breakdown
Decreased blood glucose level
Increased protein breakdown
Increased blood glucose level
The Correct Answer is D
Choice A reason: Increased lipid breakdown does not directly cause the release of insulin. Insulin is a hormone that facilitates glucose uptake by cells and helps regulate blood sugar levels. Lipid metabolism is primarily regulated by other mechanisms and hormones, such as glucagon and epinephrine.
Choice B reason: Decreased blood glucose level would not stimulate insulin release. In fact, low blood glucose levels would signal the pancreas to reduce insulin secretion. Instead, glucagon would be released to increase blood glucose levels by stimulating the conversion of glycogen to glucose in the liver.
Choice C reason: Increased protein breakdown does not directly trigger the release of insulin. Protein metabolism involves amino acids and other metabolic pathways, but insulin release is primarily regulated by blood glucose levels.
Choice D reason: The release of insulin is caused by increased blood glucose levels. When blood glucose levels rise, such as after eating a meal, the beta cells in the pancreas secrete insulin to help cells absorb glucose from the bloodstream, thereby lowering blood glucose levels and maintaining homeostasis.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A reason: This explanation is not correct. The reason why oral medications are not used for type 1 diabetes is not related to the child's ability to take the entire dose. The primary issue is the nature of insulin and how it must be administered.
Choice B reason: This statement is incorrect. The use of insulin injections is not based on age but on the type of diabetes. Type 1 diabetes requires insulin therapy regardless of the patient's age.
Choice C reason: Insulin is a protein that, if taken orally, would be broken down by the digestive enzymes in the gastrointestinal tract, rendering it ineffective. For this reason, insulin must be administered through subcutaneous injections to ensure it reaches the bloodstream intact and can effectively regulate blood glucose levels.
Correct Answer is C
Explanation
Choice A reason: Most patients with CNS tumors do not develop metastatic disease. Central nervous system (CNS) tumors, including brain tumors, typically do not metastasize outside the CNS. Instead, they grow and exert pressure on adjacent brain structures, leading to neurological symptoms.
Choice B reason: While brain tumors can be very deadly, the TNM classification system is not avoided due to the lethality of the tumors. The main reason for not using the TNM system is because the classification criteria do not align well with the unique aspects of brain tumors.
Choice C reason: Tumor size is less relevant than the location and histology for brain tumors. The location of the tumor within the brain and its histological characteristics (e.g., type, grade, and molecular features) are more critical for prognosis and treatment planning. Brain tumors can cause significant clinical issues even when small, depending on their location.
Choice D reason: Brain tumors can have a poor prognosis, but this is not the reason the TNM classification is not used. The classification system's limitation is primarily due to the fact that brain tumors' behavior and treatment considerations depend more on their location and histological features than on tumor size, nodal involvement, and metastasis, which are the focus of the TNM system.
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