消化系统教学课件.ppt

Day 34,35;Salivary Glands;Lip;Tongue;2021/7/9;;;Esophagus;;Stomach;9、 人的价值，在招收诱惑的一瞬间被决定。*** 10、低头要有勇气，抬头要有低气。**** 11、人总是珍惜为得到。***** 12、人乱于心，不宽余请。**** 13、生气是拿别人做错的事来惩罚自己。***** 14、抱最大的希望，作最大的努力。**** 15、一个人炫耀什么，说明他内心缺少什么。。***** 16、业余生活要有意义，不要越轨。*** 17、一个人即使已登上顶峰，也仍要自强不息。****;Gastric Glands;Small Intestine;4 types of cells in epithelium: 1. Enterocytes: Tall, columnar. Has microvilli. Secretes enzymes f or digestion. 2. Goblet cells: Unicellular exocirne gland which secretes mucus. 3. Paneth cells: Secretes lysozyme. Found in the base of crypts of LieberKuhn. 4. Enteroendocrine cells. 4 layers and muscularis externa has 2 muscle layers: Inner circular and outer longitudinal. Lamina propria contains MALT. Lamina propria of ileum contains peyer’s patches. Submucosa contains submucosal nerve plexus Meissner’s. Muscularis externa mucosae contains the myenteric nerve plexus of Aurbach’s. ;Large Intestine;Rectum Anal Canal;Pancreas;The liver is composed of thousands of polygonal structures called hepatic lobules, which are the basic functional units of the organ. Diagram shows a small central vein projecting through the center of each hepatic lobule and several sets of blood vessels defining the periphery. The peripheral vessels are grouped primarily in connective tissue comprising the portal tracts, which usually include a branch of the portal vein and a branch of the hepatic artery, as well as a branch of the bile duct. These comprise the portal triad. Both blood vessels to each lobule give off sinusoids, which run between plates of hepatocytes and drain into the central vein. ;Circulation of the Liver;;;Gall Bladder;Pancreas;;