Gestational diabetes is: (Select All that Apply.)

Choice A reason: Alpha cells of the pancreas do not produce insulin. Insulin is produced by the beta cells of the pancreas. Therefore, the absence of alpha cells would not affect insulin secretion.

Choice B reason: The primary function of alpha cells in the pancreas is to produce and secrete glucagon. Glucagon is a hormone that raises blood glucose levels by promoting the conversion of glycogen to glucose in the liver. Without alpha cells, the body would not be able to secrete glucagon, leading to issues with glucose regulation.

Choice C reason: Somatostatin and gastrin are not secreted by alpha cells. Somatostatin is produced by delta cells of the pancreas and other parts of the digestive system, while gastrin is primarily produced by G cells in the stomach lining. Therefore, the absence of alpha cells would not affect the secretion of somatostatin and gastrin.

Choice D reason: Pancreatic polypeptides are produced by PP cells (pancreatic polypeptide cells) in the pancreas. The absence of alpha cells would not impact the secretion of pancreatic polypeptides.

Choice A reason: Cushing's is not related to this type of edema. Cushing's syndrome is a condition caused by prolonged exposure to high levels of cortisol, a hormone produced by the adrenal glands. It can lead to various symptoms, including weight gain, thinning skin, and high blood pressure, but it does not describe the specific characteristic of edema that leaves an indentation when pressed.

Choice B reason: Swelling is a general term that describes an increase in the size of a body part, often due to the accumulation of fluid. While edema is a type of swelling, the term "swelling" itself does not specifically refer to the characteristic of leaving an indentation upon pressure.

Choice C reason: Dependent edema occurs in areas of the body that are lower than the heart, often due to gravity. This type of edema can be seen in conditions like heart failure or prolonged immobility. However, it does not specifically refer to the characteristic of pitting, which is the ability to leave an indentation upon applying pressure.

Choice D reason: Pitting edema is the correct term for this condition. It occurs when pressure is applied to a swollen area, forcing fluid movement and leaving a visible indentation that persists for some time. Pitting edema is commonly seen in conditions such as congestive heart failure, liver disease, and deep vein thrombosis. The extent and duration of the indentation can help assess the severity of the edema.