Micturition is stimulated by:
Bladder filling.
Segmental movement.
Rectal filling.
Mass movements.
The Correct Answer is A
Choice A reason: Micturition, or urination, is stimulated by the filling of the bladder. As the bladder fills with urine, stretch receptors in the bladder wall are activated. These receptors send signals to the brain, which then triggers the urge to urinate. When the bladder is full enough, the brain sends signals to the muscles of the bladder to contract and to the urethral sphincter to relax, allowing urine to be expelled from the body.
Choice B reason: Segmental movement refers to the rhythmic contractions and relaxations of segments of the intestine that help in the movement of contents along the gastrointestinal tract. It is not related to the process of micturition.
Choice C reason: Rectal filling is associated with the defecation reflex, not micturition. When the rectum fills with feces, stretch receptors in the rectal walls are activated, leading to the urge to defecate. This process is separate from the mechanisms involved in urination.
Choice D reason: Mass movements are large, strong contractions of the colon that move fecal matter toward the rectum, facilitating defecation. They are not involved in the process of micturition.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A reason: NGT (nasogastric tube) is used for enteral feeding, not parenteral nutrition. Enteral feeding involves delivering nutrients directly to the stomach or small intestine, bypassing the need for eating. This method is suitable for patients who have a functioning digestive system but cannot eat orally. Parenteral nutrition, on the other hand, involves delivering nutrients directly into the bloodstream.
Choice B reason: Oral administration of nutrition involves consuming food or nutrients by mouth. This method is suitable for individuals who can eat and digest food normally. Parenteral nutrition bypasses the digestive system altogether and delivers nutrients directly into the bloodstream, making oral administration inappropriate for TPN.
Choice C reason: Central Line is the correct answer because Total Parenteral Nutrition (TPN) requires delivery of nutrients directly into a central vein, typically the superior vena cava. This is because TPN solutions are highly concentrated and can irritate smaller veins, leading to complications such as phlebitis. A central line allows for the safe administration of TPN, ensuring that the high osmolarity solution is rapidly diluted by the large volume of blood in the central veins.
Choice D reason: Peripheral line administration is used for Peripheral Parenteral Nutrition (PPN), not TPN. PPN can be delivered through a peripheral vein because it is less concentrated than TPN. Using a peripheral line for TPN is not appropriate due to the risk of complications from the high osmolarity of the TPN solution.
Correct Answer is D
Explanation
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.
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