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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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Cardiac myocytes (heart muscle cells) are less likely to undergo neoplastic transformation compared to other cell types. These cells have a very limited ability to proliferate and typically do not undergo the rapid cell division that is characteristic of cancerous growth.
B. Hepatocytes (liver cells) are capable of undergoing neoplastic transformation and can give rise to liver cancer (hepatocellular carcinoma) under certain conditions, such as chronic liver disease or cirrhosis.
C. Epithelial cells, which line body surfaces and cavities, are among the most common cell types to undergo neoplastic transformation. Various cancers, such as skin cancer, lung cancer, and colorectal cancer, arise from epithelial cells.
D. Lymphocytes (a type of white blood cell) can develop into neoplasms, such as lymphomas or leukemias, when they undergo malignant transformation.
Correct Answer is A
Explanation
A. The absence of chronic disease is not a strict requirement for effective perfusion. While chronic diseases can impact perfusion, such as through the effects of diabetes or hypertension on the cardiovascular system, effective perfusion can still occur in individuals with chronic conditions if other factors are managed appropriately.
B. Adequate blood volume is essential for effective perfusion because without enough blood, oxygen and nutrients cannot be delivered to tissues.
C. An open airway is crucial for effective perfusion because it allows for proper oxygenation, which is necessary for the delivery of oxygen to tissues via the bloodstream.
D. Functional systemic circulation is required for effective perfusion, as it ensures that blood can flow throughout the body to deliver oxygen and nutrients to tissues and remove waste products.
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