An essay is a written piece of content that presents a writer's thoughts, opinions, or arguments on a particular subject. The length of an essay can vary depending on the purpose and audience, but generally, an essay should be long enough to fully explore and develop its main ideas.
One common guideline for determining the appropriate length of an essay is the "5-paragraph essay" model, which consists of an introduction, three body paragraphs, and a conclusion. According to this model, an essay should be around 500-800 words in length. This length allows for the development of a clear and concise argument, while also providing enough detail and evidence to support the main points.
However, it's important to note that this is just a guideline, and the appropriate length for an essay may vary depending on the specific requirements of the assignment or the needs of the audience. For example, a high school essay may be shorter than a college essay, while a graduate-level essay may be longer.
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Overall, the appropriate length for an essay will depend on the specific goals of the assignment and the needs of the audience. By considering these factors and striving for clarity and concision, you can create an essay that effectively communicates your thoughts and arguments.
Pancreas: Anatomy, Function, and Treatment
When the pancreas is young, the surface of the pancreas is relatively smooth. Diffuse enlargement of the gland may be caused by acute pancreatitis, lymphoma and and metastasis to the gland. Journal of Anatomy and Physiology, pt. Zonula occludens tight junctions are present near the acinar lumen arrows. For more details about pancreatic duct system, take a look at the following study unit and custom quiz: Custom quiz: Pancreatic duct system Start quiz Function The pancreas is a unique organ because it fulfills both exocrine and endocrine roles. Size of the Pancreas In this section we deal with the various criteria that are used to assess the size of the pancreas. This narrow organ lies along the first segment of your small intestine, called the duodenum.
Space occupying diseases, such as primary or metatstatic carcinoma of the pancreas lymphoma and von Hippel Lindau result in an enlarged pancreas. Rough endoplasmic reticulum RER shown by high magnification electron micrograph. Physical examination reveals epigastric tenderness, hypoactive bowel sounds, fever, tachypnea, periumbilical and flank ecchymoses, and possibly jaundice if the cause is a gallstone. Flow through the ampulla of Vater is controlled by a sphincter of Oddi. Pancreatic ducts Traveling within the entire pancreatic parenchyma from the tail to the head is the main pancreatic Wirsung duct.
Arrows mark budding of vesicles from the RER and indicate the direction of protein transport by the vesicles to the Golgi and thence to the formation of zymogen granules image right. Kenhub does not provide medical advice. A relative discrepancy in the size of the tail and the size of the head in the presence of a dilated pancreatic duct raises the distinct probabability of an upstream panctreatic carcinoma or obstructing benign mass or stone. The New England Journal of Medicine. The cross sectional image A emphasizes the location of the celiac ganglia of the autonomic system lateral to the aorta while B emphasizes the rich nerve plexus that connects these ganglia to the pancreas.
Introduction The mandate for this chapter is to review the anatomy and histology of the pancreas. It produces enzymes that help to break down food digestion. Anatomic relationships of the pancreas with surrounding organs and structures Several key relationships should be noted. How does the pancreas affect blood sugar? What are the parts of the pancreas? Blue zymogen granules are conspicuous in the acinar cells. Your provider may use surgery to look for problems in your pancreas.
The inferior border margo inferior separates the posterior from the inferior surface; the superior mesenteric vessels emerge under its right extremity. Guidelines There are absolute measurements that one can use if subjectivity of the size assessment fails. In b there is atrophy associated with a dilated duct. The portion nearest the liver lies in a groove on the dorsal aspect of the head see Figure 7B. Apical domain of acinar cells is filled with zymogen granules electron micrograph.
The arterial blood supply of the pancreas. Arrows in the cisterna image left; red arrows point toward the interior side of the endoplasmic reticulum. The upper limits of a normal duct diameter on CT is considered to be 2 to 3 mm in the body and tail, and up to 5 mm in the head. Compare this with Figures 19 and 27, where intralobular ductules are shown in longitudinal section. Its veins open into the lienal and superior mesenteric veins.
CT scan of the upper abdomen at the level of the pancreas. Centroacinar cells are typically located at the junction of an acinus or acinar tubule with a small ductule, but they may be interspersed within an acinar tubule. This parenchymatous organ is divided into five anatomical parts; the head, uncinate process, neck, body and tail. Compare the staining in mouse islet to Figure 36, a mouse islet stained for insulin. Less common diseases such as von Hippel Lindau, hemangioma, Merckl cell tumor, sarcomas, and VIPOMAS are usually associated with unusual contour deformities and heterogeneous morphology of the gland.
Gross Anatomy Figures 1-13 depict the gross anatomy of the pancreas and its relationship to surrounding organs in adults. At the ultrastructural level, the cell types are distinguished primarily by differences in their granules. Selective beta-cell loss and alpha-cell expansion in patients with type 2 diabetes mellitus in Korea. Â The main players responsible for pancreatic function are endocrine and exocrine glands. In symptomatic patients e. Quantitation of endocrine cell content in the pancreas of nondiabetic and diabetic humans.