TA的每日心情 | 火毛 2018-7-23 19:41 |
---|
签到天数: 257 天 连续签到: 1 天 [LV.8]以坛为家I
|

楼主 |
发表于 2011-11-9 22:04
|
显示全部楼层
The food in the stomach and intestinal digestion, mainly various digestive enzymes of. The colon does not produce enzymes, only bacteria digestion. Colon within a variety of bacteria, anaerobic bacillus Escherichia coli 70%, 20%, and Streptococcus pneumoniae, Staphylococcus aureus, proteus, Lactobacillus, bacillus and yeast. There are protozoa and spiral. The important role of intestinal bacteria can produce physiological needs of the material, such as food vitamin deficiency can be in intestinal synthesis of vitamin K, vitamin B1, vitamin H, vitamin B2, B12, B6, Wei acid, folic acid and racemic pantothenic acid. Can also produce indole, skatole, hydrogen sulfide so that fecal odor. Such as long-term use of antibiotics are not easy to synthesize vitamin and cannot absorb, cause vitamin deficiency. Chyme through the ileocecal valve to the cecum every 24 hours about 500 ~ 1000 ml. Mainly in the right colon absorption, the main absorption of water and sodium, daily can absorb 460 mEq sodium and 350 to 2000 ml of water. Also absorbs a small amount of potassium, chlorine, urea, glucose, amino acids, bile acids and drugs. The rectum can absorb water, small amounts of glucose, amino acids, milk and drug. Intestinal dysfunction, enteritis and infection can affect the absorption of. Diarrhea intestinal peristalsis enhancement, absorption is reduced, serious when can lose a large number of vitamins, water and electrolyte. If normal is in the sigmoid colon is formed within the stool, awaiting discharge. |
|