1.
Primary duct extending the entire length of the pancreas.
Correct Answer
A. Wirsung's duct
Explanation
Wirsung's duct is the primary duct that runs the entire length of the pancreas. It is responsible for carrying pancreatic juices, which aid in digestion, from the pancreas to the small intestine. Santorini's duct is a smaller secondary duct that branches off from Wirsung's duct. Vater's ampulla is a small chamber where the common bile duct and Wirsung's duct meet before emptying into the small intestine. The sphincter of Oddi is a muscular valve that controls the flow of pancreatic juices and bile into the small intestine. Therefore, based on the information provided, Wirsung's duct is the correct answer.
2.
A secondary duct that drains the upper anterior head of the pancreas.
Correct Answer
B. Santorini's duct
Explanation
Santori's duct is a secondary duct that drains the upper anterior head of the pancreas. This duct is an alternative route for pancreatic fluid to reach the duodenum, in addition to the main pancreatic duct (Wirsung's duct). Santori's duct is smaller in size and is located more superiorly compared to the main pancreatic duct. It is named after Giovanni Domenico Santorini, an Italian anatomist who first described it.
3.
Most common pancreatic congenital abnormality.
Correct Answer
Ectopic pancreatic tissue
Explanation
Ectopic pancreatic tissue refers to the presence of pancreatic tissue in abnormal locations outside of the pancreas. This is the most common congenital abnormality of the pancreas. It occurs when pancreatic tissue is found in areas such as the stomach, duodenum, or small intestine. This condition can lead to various complications, including inflammation, obstruction, or even pancreatic cancer. The presence of ectopic pancreatic tissue is typically diagnosed through imaging tests, such as CT scans or endoscopic ultrasound. Treatment options depend on the location and symptoms associated with the ectopic tissue.
4.
Main hormones produced by the endocrine portion of the pancreas?
Correct Answer
D. A and B
Explanation
The main hormones produced by the endocrine portion of the pancreas are insulin and glucagon. Insulin helps regulate blood sugar levels by promoting the uptake of glucose from the bloodstream into cells. Glucagon, on the other hand, raises blood sugar levels by stimulating the liver to release stored glucose. Fibrinogen is not produced by the pancreas and is not a hormone involved in blood sugar regulation. Therefore, the correct answer is A and B.
5.
Most important humoral agent produced in duodenum.
Correct Answer
Secretin
Explanation
Secretin is the most important humoral agent produced in the duodenum. It is a hormone that is released in response to the presence of acidic chyme in the duodenum. Secretin stimulates the pancreas to release bicarbonate ions, which helps neutralize the acidity of the chyme. This hormone also inhibits the release of gastric acid, thus preventing further acidification of the duodenum. Overall, secretin plays a crucial role in maintaining the pH balance in the small intestine and regulating digestion.
6.
There may be a decrease in blood sugar level in tumors of the ______.
Correct Answer
Islets of Langerhans
Explanation
The Islets of Langerhans are clusters of cells in the pancreas that produce and release hormones, including insulin, which helps regulate blood sugar levels. Tumors in the Islets of Langerhans can disrupt the normal production and release of insulin, leading to a decrease in blood sugar levels. This is because the tumor cells may produce less insulin or interfere with the functioning of the healthy cells in the Islets, resulting in a decrease in blood sugar levels.
7.
For sonographic evaluation of the pancreas, the patient should be NPO for ___ to ___ hours before the exam.
Correct Answer
8-10
8 to 10
Eight to ten
Explanation
The patient should be NPO (nothing by mouth) for 8 to 10 hours before the sonographic evaluation of the pancreas. This is necessary to ensure that the stomach and duodenum are empty, allowing for better visualization of the pancreas during the exam.
8.
Active simulators of secretin.
Correct Answer
D. Fats and alcohol
Explanation
Secretin is a hormone that helps regulate digestion by stimulating the release of pancreatic enzymes and bile. Fats and alcohol are known to be active simulators of secretin. When these substances are present in the digestive system, secretin is released to aid in the digestion and absorption of fats and alcohol. This hormone helps to break down and process these substances, ensuring proper digestion and absorption in the body.
9.
Present in 40-60% of patients with pancreatitis.
Correct Answer
Gallstones
Explanation
Gallstones are a common cause of pancreatitis, present in 40-60% of patients with this condition. Pancreatitis is inflammation of the pancreas, and gallstones can block the pancreatic duct, leading to the backup of digestive enzymes and subsequent inflammation. This can result in symptoms such as abdominal pain, nausea, and vomiting. Gallstones are formed when there is an imbalance in the substances that make up bile, causing them to harden and form stones. Therefore, it is likely that gallstones are the correct answer to the given question.
10.
The pancreatic duct measures
Correct Answer
D. 2 mm
Explanation
The pancreatic duct measures 2 mm. This is the correct answer because the pancreatic duct is a small tube that carries digestive enzymes from the pancreas to the small intestine. It is typically very narrow, with a diameter of around 2 mm. This size allows for the efficient transport of pancreatic enzymes while still fitting within the small spaces of the digestive system.
11.
Windows for visualization of the pancreas.
Correct Answer(s)
A. Left lobe of the liver
C. Stomach
D. Colon
Explanation
The given options represent different organs in the human body. The left lobe of the liver, stomach, and colon are all part of the digestive system. The left lobe of the liver is located on the left side of the body, below the diaphragm. The stomach is a muscular organ in the upper abdomen that receives and breaks down food. The colon, also known as the large intestine, is responsible for absorbing water and electrolytes from digested food. Therefore, these options are all related to digestion and are not related to the visualization of the pancreas.
12.
Pseudocysts are a collection of fluid that arises from loculation of inflammatory processes, necrosis, or hemorrhage.
Correct Answer
A. True
Explanation
Pseudocysts are indeed a collection of fluid that can occur as a result of inflammatory processes, necrosis, or hemorrhage. These cysts are not lined by epithelial cells, which distinguishes them from true cysts. Therefore, the statement is true.
13.
True cysts are lined by a mucous epithelium and may be _____ or _____.
Correct Answer
Congenital or acquired
Congenital, acquired
Explanation
This question is asking for the possible characteristics of true cysts. The correct answer states that true cysts can be either congenital or acquired. This means that they can either be present from birth or develop later in life. The repetition of "Congenital or acquired" and "Congenital, acquired" in the answer options emphasizes that both congenital and acquired are valid possibilities for true cysts.
14.
Retention cysts, neoplastic cysts, and parasitic cysts are examples of ________.
Correct Answer
B. Acquired cysts
Explanation
Retention cysts, neoplastic cysts, and parasitic cysts are all examples of acquired cysts. Acquired cysts are cysts that develop after birth, usually as a result of an underlying condition or injury. This is in contrast to congenital cysts, which are present at birth. The given answer option correctly identifies that these types of cysts are acquired rather than congenital.
15.
The exocrine pancreatic lesions, more common in men, accounting for 95% of all malignant pancreatic tumors.
Correct Answer
Adenocarcinoma
Explanation
Exocrine pancreatic lesions refer to abnormal growths or tumors in the exocrine cells of the pancreas. These lesions are more frequently observed in men and make up the majority (95%) of all malignant pancreatic tumors. Adenocarcinoma is a type of cancer that originates in the glandular cells, which are a type of exocrine cells. Therefore, adenocarcinoma is the most likely diagnosis for the given scenario, considering the prevalence and characteristics of exocrine pancreatic lesions.
16.
Blood is drained from the pancreas by the splenic vein and the _________.
Correct Answer
Superior mesenteric vein
SMV
Explanation
The blood from the pancreas is drained by two main veins, the splenic vein and the superior mesenteric vein (SMV). The splenic vein collects blood from the spleen and the pancreas, while the SMV drains blood from the small intestine and other abdominal organs. Together, these veins ensure that the pancreas receives proper blood supply and that waste products are carried away for elimination.
17.
Blood is supplied to the pancreas by the splenic artery and the __________.
Correct Answer
N/A
Pancreaticoduodenal arteries
Explanation
The correct answer is Pancreaticoduodenal arteries. Blood is supplied to the pancreas by the splenic artery and the pancreaticoduodenal arteries. The pancreaticoduodenal arteries are branches of the gastroduodenal artery, which is a branch of the common hepatic artery. These arteries provide the pancreas with oxygenated blood, which is essential for its proper functioning.