digestive system test
whats the function of an enzyme
speeds up a chem reaction
chemical digestionof starch begins in the
mouth
where does peristalsis occur? not occur?
occurs in; stomach, esophagus and duodenum. Not occur: liver
food passing through digestive tract from esophagus to duodenum must pass through....
cardiac schincter and the stomach
what is a comppnent of gastric juice?
water, hydrochloric acid, mucus, and enzymes aka pepsinogen
where is the digestion of maltose completed?
small intestines
the function of the liver is....
remove toxins from blood
an increase in the consentration of glucose in the blood results in increated secretion of a hormone from the....
pancreas
the detection of low blood suger will be followed by...
increased glucagon and decreased glycogen
the finger like projections are called what, and found where
villi and found in small intestines
after digestion of a meal which increases in consentration in a villi
lipids
the appendix extends from the...
caecum after the ileo caecal valve
secretin is released by....
small intestine in response to low pH
where is the greatest consentrationof hydrogen ions found?
in the stomach, hydrocloric acid
where does emulsification of fat occur
the small intestine
the oblique muscles are found in the
stomach and contribute to churning
what is the difference between the begining of the large intestines and the end?
there is more water in the begining then the end
what organ produces pepsinogen
the stomach
what is true about salivary glands
they are exocrine and secrete the enzyme ptyalin
besides ingestion and chewing what else occurs in the mouth
production of maltose
the bottom of the epiglottis covers the
trachea and closes for swallowing
of th small intestine which part is the longest?
lleum at 11-12ft
the cells in the stomach responsible for releasing a hormone are
G cells
what substances are found in pancreatic juice?
water, a buffer and enzymes
glucose is stored in the liver as
glycogen
which biomolecules are digested into monomers by enzymes from the pancreas
lipids
CCk is produced in the, which stimulates the release of products from the...
small intestine, pancreas
disaccarides are a component of....
intestinal juice
protien digestion requires the secretion of enzymes from the...
pancreas, intestine and stomach
how manyb pairs of salivary glands do we have
3
most of the absorption of digested food products occurs in the
ileum
what is the digestive contribution of E coli
synthesizing vitamins and amino acids
what MUST hsppen to nutrientsbefore they truly enter an organism
be chemically and physically processed
what are functions of the stomach, what isnt
functions: kill bacteria, churn food, storage. NOT: absorb protiens
villi are specialized, what are their specialties and what arnt?
specialties: vast blood supply, huge surface area, preasence of lacteals NOT: thick cellular walls