| 释义 |
large intestine
large intestinen. The portion of the intestine that extends from the ileum to the anus, forming an arch around the convolutions of the small intestine and including the cecum, colon, rectum, and anal canal. Also called large bowel.large intestine n (Anatomy) the part of the alimentary canal consisting of the caecum, colon, and rectum. It extracts moisture from food residues, which are later excreted as faeces. Compare small intestine in•tes•tine (ɪnˈtɛs tɪn)
n. 1. Usu., intestines. the lower part of the alimentary canal, extending from the pylorus to the anus. 2. Also called small intestine. the narrow, longer part of the intestines, comprising the duodenum, jejunum, and ileum, that serves to digest and absorb nutrients. 3. Also called large intestine. the broad, shorter part of the intestines, comprising the cecum, colon, and rectum, that absorbs water from and eliminates the residues of digestion. adj. 4. internal; domestic; civil: intestine strife. [1525–35; < Latin intestīnum, n. use of neuter of intestīnus internal] large intestine The wide lower section of the intestine that extends from the end of the small intestine to the anus. In most vertebrate animals, it includes the cecum, colon, and rectum.large intestine
(or bowel) The lower part of the alimentary canal, comprising the cecum, colon, and rectum. The large intestine absorbs water and eliminates wastes as feces.Thesaurus| Noun | 1. |  large intestine - beginning with the cecum and ending with the rectum; includes the cecum and the colon and the rectum; extracts moisture from food residues which are later excreted as fecesalimentary canal, alimentary tract, digestive tract, digestive tube, gastrointestinal tract, GI tract - tubular passage of mucous membrane and muscle extending about 8.3 meters from mouth to anus; functions in digestion and eliminationbowel, gut, intestine - the part of the alimentary canal between the stomach and the anuscolon - the part of the large intestine between the cecum and the rectum; it extracts moisture from food residues before they are excretedblind gut, caecum, cecum - the cavity in which the large intestine begins and into which the ileum opens; "the appendix is an offshoot of the cecum"transverse colon - the part of the large intestine that extends across the abdominal cavity and joins the ascending to the descending colonascending colon - the part of the large intestine that ascends from the cecum to the transverse colondescending colon - the part of the large intestine that descends from the transverse colon to the sigmoid colonsigmoid colon, sigmoid flexure - the s-shaped curve between the descending colon and the rectumrectum - the terminal section of the alimentary canal; from the sigmoid flexure to the anus |
Translationslarge intestine
large intestine: see intestineintestine,
muscular hoselike portion of the gastrointestinal tract extending from the lower end of the stomach (pylorus) to the anal opening. In humans this fairly narrow (about 1 in./2.
..... Click the link for more information. .Intestine, Large the portion of the gut of vertebrate animals and man that extends from the termination of the small intestine to the anus in cyclostomes, man, and most fishes and mammals. In chondrichthians, lungfish, amphibians, reptiles, birds, and monotremes, the large intestine empties into a cloaca. Considerable absorption of water from the residual chyme takes place in the large intestine, with subsequent formation of the feces. In mammals, including man, the large intestine is divided into the colon, with its ascending, transverse, descending, and sigmoid portions, and the rectum. The cecum, or blind gut, is situated at the place where the small intestine passes into the large intestine. In herbivores, marsupials, ungulates, and some rodents the cecum is of considerable size; it is absent in some insecti-vores, ursids, edentates, cetaceans, and hippopotamuses. Many rodents and some predators, prosimians, and monkeys, in addition to man, have a narrow tube at the end of the cecum, the vermiform appendix. The length of the large intestine is 1–2 m in man, 6.5–14 m in cattle, 0.28–0.9 m in dogs, 0.2–0.45 m in cats, and 3.5–6 m in swine. In man the diameter of the large intestine is 7 cm in the initial section and 4 cm in the descending colon. The wall of the large intestine is composed of mucous, submucous, and serous membranes and a muscular coat. Bacteria multiply enormously in the large intestine; they help form an immunologic barrier and react against pathogenic microbes. The bacteria complete the hydrolization of the components of digestive secretions and of undigested food residues; they also synthesize vitamins, enzymes, and other physiologically active substances. IA. L. KARAGANOV large intestine[′lärj in′tes·tən] (anatomy) colon large intestine the part of the alimentary canal consisting of the caecum, colon, and rectum. It extracts moisture from food residues, which are later excreted as faeces large intestine
large in·tes·tine [TA] the distal (aboral) portion of the digestive tube extending from the ileocecal valve to the anus; it comprises the cecum (with appendix), colon, rectum, and anal canal; shorter in length but larger in caliber than the small intestine, the large intestine functions to absorb fluids and electrolytes and provide temporary storage. Synonym(s): intestinum crassum [TA]large intestinen. The portion of the intestine that extends from the ileum to the anus, forming an arch around the convolutions of the small intestine and including the cecum, colon, rectum, and anal canal. Also called large bowel.watershed infarct Neurology Infarction of a region peripheral to 2 arteries and susceptible to ischemia; WIs are often hemorrhagic, as restoration of the circulation allows blood to flow into damaged capillaries and 'leak' into the ischemic tissue Watershed infarctions-locations Brain After internal carotid artery occlusion, causing vascular 'steal' phenomena, or between the anterior and middle cerebral arteries, which may be compromised in circle of Willis occlusions, often in a background of generalized atherosclerosis and as a possible complication of directed therapeutic embolization; cerebral perfusion may be impaired by cardiac arrest, pericardial tamponade and ex-sanguination Large intestine At either the splenic flexure, the site of anastomosis between the inferior and superior mesenteric arteries, or at the rectum, a region supplied by peripheral irrigation from the inferior mesenteric artery and the hypogastric artery large in·tes·tine (lahrj in-tes'tin) [TA] The portion of the digestive tube extending from the ileocecal valve to the anus; it comprises the cecum, colon, rectum, and anal canal.  SMALL INTESTINE: (duodenum, jejunum, ileum) LARGE INTESTINElarge intestineThe large intestine extends from the ileum to the anus and is about 1.5 m (5 ft) in length. It absorbs water, minerals, and vitamins from the intestinal contents and eliminates undigested material during defecation. The mucosa has no villi but contains glands that secrete mucus. Hyperactivity of the colon may cause diarrhea. See: illustrationThe first part of the large intestine is the cecum, a pouch on the right side into which the ileum empties. Attached to the cecum is the vermiform appendix, about 7.5 to 10.4 cm (3 to 4 in) long. The ascending colon extends from the cecum upward to the undersurface of the liver, where it turns left (hepatic flexure) and becomes the transverse colon, which continues toward the spleen and turns downward (splenic flexure) to become the descending colon. At the level of the pelvic brim, the descending colon turns inward in the shape of the letter S and is then called the sigmoid colon. The rectum, about 10.2 to 12.7 cm (4 to 5 in) long, is the straight part that continues downward; the last 2.5 cm (1 in) is called the anal canal, which surrounds the anus. illustrationSee also: intestinelarge intestine The part of the intestine that extends from the end of the ILEUM to the ANUS. It starts in the lower right corner of the abdomen with the caecum, from which the APPENDIX protrudes, proceeds as the ascending COLON to the upper right corner, loops across to the upper left corner as the transverse colon then descends to the lower left corner as the descending colon. The intestine then swings down and centrally as the sigmoid colon and continues as the rectum and the anal canal. The main function of the colon is to reabsorb water from the bowel contents. The rectum is a temporary store for faeces.large intestine the lower part of the gut, consisting of caecum, appendix, colon and rectum, and leading to the anus.large in·tes·tine (lahrj in-tes'tin) [TA] The portion of the digestive tube extending from the ileocecal valve to the anus; it comprises the cecum, colon, rectum, and anal canal. LegalSeeLargeAcronymsSeelithiumlarge intestine
Words related to large intestinenoun beginning with the cecum and ending with the rectumRelated Words- alimentary canal
- alimentary tract
- digestive tract
- digestive tube
- gastrointestinal tract
- GI tract
- bowel
- gut
- intestine
- colon
- blind gut
- caecum
- cecum
- transverse colon
- ascending colon
- descending colon
- sigmoid colon
- sigmoid flexure
- rectum
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