What would happen if your patient did not have alpha cells of the pancreas?
They would not be able to secrete insulin.
They would not be able to secrete glucagon.
They would not be able to secrete somatostatin and gastrin.
They would not be able to secrete pancreatic polypeptides.
The Correct Answer is B
A. Insulin is secreted by beta cells of the pancreas, not alpha cells. Therefore, a lack of alpha cells would not affect insulin secretion.
B. Alpha cells of the pancreas are responsible for secreting glucagon, which helps raise blood glucose levels by promoting the release of glucose from the liver. Without alpha cells, glucagon secretion would be impaired.
C. Somatostatin and gastrin are secreted by delta cells and G cells, respectively, not alpha cells. Therefore, a lack of alpha cells would not prevent the secretion of these hormones.
D. Pancreatic polypeptides are secreted by F cells in the pancreas, not alpha cells. Therefore, a lack of alpha cells would not affect the secretion of pancreatic polypeptides.
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Related Questions
Correct Answer is C
Explanation
A. Cystine stones are rare and occur due to a genetic disorder called cystinuria. They are not the most common type of renal calculi.
B. Uric acid stones are also relatively common, especially in individuals with gout or those with high levels of uric acid in the urine. However, calcium oxalate is more common.
C. Calcium oxalate is the most common type of renal calculi, accounting for about 70-80% of kidney stones. These stones form when calcium combines with oxalate in the urine.
D. Struvite stones are associated with urinary tract infections caused by urease-producing bacteria. They are less common than calcium oxalate stones.
Correct Answer is B
Explanation
A. Needle thoracentesis is typically performed in cases of pneumothorax or pleural effusion, not asthma exacerbation. The symptoms described do not indicate a pleural space issue that would require thoracentesis.
B. Emergency intubation may be necessary if the asthma exacerbation is severe and unresponsive to initial interventions such as bronchodilators, corticosteroids, and oxygen therapy. The patient's symptoms of severe dyspnea, accessory muscle use, and wheezing suggest respiratory distress, and intubation may be required to secure the airway and assist with ventilation.
C. Pleurodesis is a procedure used to treat recurrent pleural effusions, not asthma exacerbations. It involves the obliteration of the pleural space, which is not relevant to the current situation.
D. Chest tube insertion is typically performed for pneumothorax or other issues involving the pleural space, not for asthma exacerbation. The described symptoms do not suggest the need for a chest tube.
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