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