digestive homework
What digestive substances does the small intestine produce?
-amnipeptidase -lactase -maltase -sucrase
What digestive substances does the liver produce?
-bile
What substances digest lipids?
-bile -lipase -salivary amylase
What nutrient(s) digestion end in the small intestine?
-carbohydrate -protein
What digestive substances does the pancreas produce?
-carboxypeptidase -chymotrypsin -lipase -pancreatic amylase -trypsin
What substances digest proteins?
-carboxypeptidase -aminopeptidase -chymotrypsin -pepsin -trypsin
Important facts about submucosa tissue layer
-contains glands and nerves -contains blood vessels (-most affected by sympathetic nervous system) (-most affect by parasympathetic nervous system)
list all the accessory organs
-gall bladder -pancreas -liver -salivary organs -teeth -tongue
important facts about mucosa tissue layer
-inner most tissue layer -responsible for secretion -major absorptive layer -chief cells -parietal cells -in small intestine, this layer contains villi -responsible for the absorption of carbohydrates, lipids, proteins
What substances digest carbohydrates?
-lactase -maltase -pancreatic amylase -sucrase
What nutrient(s) digestion starts in the small intestine?
-lipids
list all the organs of the GI tract
-oral cavity -esophagus -large intestine -small intestine -stomach -pharynx -smooth muscle cells
What digestive substances does the stomach produce?
-pepsin
Important facts about serosa tissue layer:
-protective layer -binding layer -outer most tissue layer
What nutrient(s) digestion starts in the stomach?
-protein
Important facts about muscularis tissue layer
-responsible for mechanical movements -in stomach, has 3 types of muscle -produces rhythmic segmentation (-most affected by sympathetic nervous system) (-most affected by parasympathetic nervous system)
What digestive substances does the salivary gland produce?
-salivary amylase
What is the order of organs of occurrence as food would pass from the mouth to the anus?
1.mouth 2.pharynx 3.esophagus 4.gastroesophageal sphincter 5.cardia of the stomach 6.body of stomach 7.pyloric sphincter of the stomach 8.duodenum 9.jejunum 10.ileum 11.ileocecal valve 12.cecum 13.ascending colon 14.transverse colon 15.descending colon 16.sigmoid colon 17.rectum 18.anal canal 19.anal sphincter 20.anus
What nutrient(s) digestion starts in the mouth?
carbohydrate
sympathetic nerve stimulation of the accessory digestive organs would ______ chemical secretions.
decrease
describe defecation
discharge of indigestible wastes from the body
parasympathic nerve stimulation of the accessory digestive organs would ___________ chemical secretions.
increase
describe segmentation
major contractile activity of the small intestine that results in muscular contraction along different portions of the lumen
describe digestion
mechanical and chemical breakdown of food into absorbable molecules
describe mastication
movements that pulverize food and mix it with saliva
The larynx and nasal cavity are a part of: GI tract accessory organ part of both part of neither
part of neither
describe peristalsis
rhythmic, wave-like contractions that move food through the digestive tract
describe mass movement
strong, forceful, wave-like contractions which moves the colon contents toward the rectum
describe emulsification
the act of breaking up fat globules into fat droplets
describe deglutition
the mechanical and physiological act of moving food or fluid from the oral cavity to the stomach
describe absorption
the passage of monomers of food molecules through the mucous membrane into the blood or lympth
describe ingestion
the taking of food into the digestive system by way of the mouth
