digestivesystems消化系統(tǒng)(編輯修改稿)
2025-06-21 22:42 本頁面
【文章內(nèi)容簡(jiǎn)介】 fatty acids (ruminants), and various other pounds. 吸收乙醇、阿司匹林、揮發(fā)性脂肪酸和其它不同化合物。 ? There is no absorption of monosaccharides, amino acids, or long chain fatty acids in the stomach. 胃不吸收單糖、氨基酸或者長(zhǎng)脂肪酸鏈。 Stomach ? Secretions of true stomach真胃分泌作用 ? HCl ? Denatures proteinbreaks intermolecular bonds ? Kills most bacteria present in foodstuffs ? Activates pepsinogen ? Ruptures starch granules破裂淀粉顆粒 ? Pepsinogen胃蛋白酶原 ? HCl converts pepsinogen to pepsin the active enzyme 胃蛋白酶原 胃蛋白酶 ? Pepsin begins digestion of proteins ? Clots milk 合牛奶牛凝結(jié)成塊 Regions of true stomach真胃的區(qū)域 ? Esophageal region食道 ? Nonglandular 無腺體 ? Area most prone to ulcers潰瘍 ? Cardiac region噴門 ? Produces mucus, which protects stomach lining產(chǎn)生黏液保護(hù)胃內(nèi)層 ? Fundic region胃底 ? Produces mucus, enzyme, HCl ? Parietal cellsproduce HCl ? Chief cellsproduce pepsinogen ? Pyloric region幽門 賁門腺體區(qū)域 胃底腺體區(qū)域 憩室外部表面 幽門 食道腺體區(qū)域 胃切面邊緣 憩室外部表面 幽門腺體區(qū)域 Normal Esophogeal Area of Pig Stomach 豬胃正常的食道 Stomach Ulcer in a Human 人的胃潰瘍 Stomach ? Secretions of true stomach真胃分泌作用 ? Rennin (abomasum)凝乳酶 ? Clots milk ? Mucus黏液 ? Protects lining of stomach from acid and pepsin Ruminant Stomach 反芻動(dòng)物的胃 網(wǎng)胃 瓣胃 食道 瘤胃 皺胃 小腸 瘤胃 皺胃 網(wǎng)胃 氣體 液體 瓣胃 Ruminant Stomach ? Rumen 瘤胃Development ? In newborn ruminants the abomasum is the only fully developed part of the stomach. 新生反芻動(dòng)物皺胃充分發(fā)育 ? The rumen, reticulum and omasum are present, but they are very small and nonfunction. 其它胃小而無功能。 Ruminant Stomach ? Consumption of forages and concentrates and inoculation with rumen bacteria from other ruminants begins fermentation in rumen which caused the rumen to develop. 粗飼料和精飼料消耗和接種瘤胃細(xì)菌開始在瘤胃中發(fā)酵，引起瘤胃發(fā)育。 ? On average, it takes about 2 – 3 months in calves and lambs for the rumen to develop. 犢牛和羔羊大約 23個(gè)月瘤胃發(fā)育期。 Relative Size of Stomach Compartments胃分隔相對(duì)尺寸 Cattle牛 , % Sheep綿羊 , % Rumen瘤胃 54 (1) 62 (1) Reticulum網(wǎng)胃 7 (4) 11 (3) Omasum瓣胃
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