Flashcards in Chapter 26 Part 2 Deck (25):
The small intestine extends from the pyloric sphincter to the..
Small intestine is divided into the
Duodenum, jejunum, and ileum
Small intestine is highly adapted for?
Digestion and absorption
Small intestine glands produce..
Enzymes, mucus, and microvilli, villi and circular folds
Mechanical digestion in the small intestine involves?
Segmentations and peristalsis
Enzymes in pancreatic juice and in microvilli of absorptive cells of the small intestine breakdown..
Disaccharides to monosaccharides
Protein digestion is completed by?
Triglycerides are broken down into fatty acids and monoglycerides by
Passage of nutrients from digested food in the GI tract into blood or lymph ?
Absorption which occurs mostly in the small intestine, occurs by ?
Simple diffusion, facilitated diffusion, osmosis, and active transport
Monosaccrides, amino acids and short-chain fatty acids pass into?
The large intestine extends from the..
Ileocecal sphincter to the anus
Large intestines regions include?
Cecum, colon, rectum, and anal canal
Contains numerous absorptive cells that absorb water and goblet cells that secret mucus
Strong peristaltic wave that drives the contents of the colon into rectum
In the large intestine, substances are further broken down and some vitamins are synthesized through?
The large intestine absorbs?
Water, electrolytes and vitamins
He elimination of feces from the rectum is called ?
Reflex action aided by voluntary contractions of diaphragm and abdominal muscles.
Digestive activities occur in three overlapping phases?
Cephalic phase, gastric phase, intestinal phase
Salivary glands secret saliva and gastric glands secret gastric juice in order to prepare the mouth and stomach for food that is about to be eaten.
Presence of food in stomach causes what phase? Promotes gastric juice
In this phase food is digested in the small intestine
Digestive changes with age include?
Decreased secretory mechanisms, decreased motility and loss of tone