intestine
Abdominal food processor
The intestine is the long, coiled tube in the abdomen where digestion is completed and nutrients absorbed.
In humans, it divides into the small intestine (where most absorption occurs) and the large intestine (which processes waste).
The plural intestines often refers to the organ generally or to animal entrails: chicken intestines, the intestines of the victim.
Intestinal fortitude is a polite way of saying guts—courage.
Lower digestive organs
- colonLarge intestine section
- duodenumInitial small intestine
- jejunumSecond small intestine portion
- ileumLast small intestine segment
cecum · rectum · appendix · villi · mucosa · lumen · sphincter · peritoneum
Chronic intestinal inflammation disorder
- colitisInflamed large intestine
- IBSIntestinal motility disorder
- celiac diseaseAutoimmune intestinal gluten reaction
- diverticulitisInfected intestinal outpouchings
obstruction · perforation · polyps · inflammation · ulcer · leaky gut · malabsorption · diarrhea
Reaction-speeding proteins
- peristalsisInvoluntary digestive muscle waves
- chymePartially digested stomach contents
- bileLiver-made digestive fluid
- amylaseStarch-digesting enzyme
lipase · protease · secretin · gastric juices · motility · segmentation · lactase · maltase
Vital dietary substances
- vitaminsEssential organic nutrients
- mineralsInorganic natural solids
- amino acidsOrganic compounds forming proteins
- glucosePrimary cellular fuel
fatty acids · electrolytes · water · villi · microvilli · bioavailability · osmosis · capillaries
Stomach lining or nonsense
- chitterlingsPig intestines as food
- sausage casingEdible tube for filling
- offalEdible animal organs
- haggisScottish offal pudding
chorizo · boudin · menudo · chitlins · natural casing
Intestinal microbial community
- bacteriaNucleus-free single-celled organisms
- probioticsLive microorganisms aiding digestion
- prebioticsFood for gut flora
- microbiotaResident microscopic organisms
fermentation · Lactobacillus · Bifidobacterium · E. coli · colonization · symbiosis · commensals · pathogens
bowels
Lower digestive organs
ileum · cecum · rectum · appendix · villi · mucosa · lumen · sphincter · peritoneum · mesentery
Crohn's disease
Chronic intestinal inflammation disorder
- colitisInflamed large intestine
- IBSIntestinal motility disorder
- celiac diseaseAutoimmune intestinal gluten reaction
diverticulitis · obstruction · perforation · polyps · inflammation · ulcer · leaky gut · malabsorption · diarrhea · constipation
enzymes
Reaction-speeding proteins
- peristalsisInvoluntary digestive muscle waves
- chymePartially digested stomach contents
- bileLiver-made digestive fluid
amylase · lipase · protease · secretin · gastric juices · motility · segmentation · lactase · maltase · sucrase
nutrients
Vital dietary substances
- vitaminsEssential organic nutrients
- mineralsInorganic natural solids
- amino acidsOrganic compounds forming proteins
glucose · fatty acids · electrolytes · water · villi · microvilli · bioavailability · osmosis · capillaries · lymphatics
tripe
Stomach lining or nonsense
- chitterlingsPig intestines as food
- sausage casingEdible tube for filling
- offalEdible animal organs
haggis · chorizo · boudin · menudo · chitlins · natural casing
gut flora
Intestinal microbial community
- bacteriaNucleus-free single-celled organisms
- probioticsLive microorganisms aiding digestion
- prebioticsFood for gut flora
microbiota · fermentation · Lactobacillus · Bifidobacterium · E. coli · colonization · symbiosis · commensals · pathogens · fiber
- gutcolon, bowel, guts, entrails, innards
- Intestinesbowel, gut, colon, ileum, jejunum
- gut anatomybowel, bowels, gut, duodenum, jejunum
- IBDulcerative colitis, Crohn's disease, colitis, inflammatory bowel disease, proctitis
- worm anatomysetae, clitellum, segments, coelom, bristles
- body partsarm, leg, hand, back, chest
intestinemouth
Oral opening
stomach · esophagus · oral cavity · anus · pharynx
intestineskin
Body's outer layer
epidermis · exterior · integument · surface · outer layer
- small intestineDigestive absorption organ
- large intestineLower digestive tract portion
- intestinal distressAbdominal discomfort from digestion
- intestinal obstructionBlocked digestive passage
- intestinal wormsParasites inhabiting the gut
- intestinal fortitudeCourage and determination