The major secretory product of the colon is

Correct Answer: B

Rationale: The correct answer is B: mucus. The colon secretes mucus to protect the lining from digestive enzymes and acids, aid in the passage of stool, and maintain proper intestinal function. Bicarbonate ions (A) are secreted in the pancreas to neutralize stomach acid. Digestive enzymes (C) are primarily secreted in the small intestine to break down nutrients. Hydrochloric acid (D) is secreted by the stomach to aid in digestion but not by the colon.

Correct Answer: B

Rationale: The correct answer is B: Sodium glucose transporter protein 1 (SGLT1). SGLT1 is responsible for the active transport of glucose and sodium across the intestinal membrane. When a patient is experiencing vomiting and diarrhea, they are losing fluids and electrolytes. By taking a glucose and electrolyte solution orally, the SGLT1 protein helps in the reabsorption of glucose and sodium to facilitate rehydration. Incorrect choices: A: Cystic fibrosis transmembrane regulator (CFTR) is associated with cystic fibrosis and does not play a direct role in rehydration. C: Insulin receptor protein (IRP) is involved in glucose uptake regulation in response to insulin, not rehydration. D: Sucrase-isomaltase protein (SIP) is involved in the breakdown of sugars in the small intestine, not rehydration.

Correct Answer: C

Rationale: The correct answer is C: liver. The breakdown of glycogen in the liver is crucial for maintaining blood glucose levels through a process called glycogenolysis. The liver releases glucose into the bloodstream to prevent hypoglycemia and provide energy to the body. Skeletal muscle (A) stores glycogen for its own energy needs, not for blood glucose maintenance. The pancreas (B) regulates blood glucose through insulin and glucagon secretion but does not directly breakdown glycogen. Adipose tissue (D) stores fat and does not play a significant role in glycogen breakdown for blood glucose maintenance.

Correct Answer: D

Rationale: The correct answer is D because the LPN/LVN can provide care for a client with intractable nausea and vomiting related to chemotherapy under the supervision of an RN. The LPN/LVN can administer prescribed antiemetic medications, monitor the client's response, assess for dehydration, and provide comfort measures. This task falls within the scope of practice for an LPN/LVN and does not require the advanced assessment and intervention skills of an RN. Choice A is incorrect because a client undergoing a glossectomy for oral cancer requires complex post-operative care that is beyond the scope of practice for an LPN/LVN. Choice B is incorrect because post-operative care for an obese client following a vertical banded gastroplasty involves monitoring for complications such as leaks or infections, which require the expertise of an RN. Choice C is incorrect because a client with anorexia nervosa with muscle weakness and decreased urine output may have underlying medical issues that require an RN's assessment and intervention skills

Correct Answer: C

Rationale: The correct answer is C: Radionuclide imaging. This test involves exposing the patient to radiation, which can be harmful to the developing fetus. Pregnant women should avoid unnecessary exposure to radiation to prevent potential harm to the baby. A: Barium enema and B: Barium swallow involve the use of contrast material that is generally considered safe during pregnancy as it does not expose the fetus to radiation. D: Gallbladder series test, such as ultrasound or MRI, are also safe for pregnant women as they do not involve radiation exposure.