Download Chapter 14 The digestive system power point notes

Chapter 14 The digestive system power point notes
___Digestion ____________ is the breakdown of ingested food and
__absorption__________ of nutrients in the blood. _Metabolism_______________ is the
production of cellular energy __ATP____________.
Organs of the alimentary canal
Mouth
Function of Organs
Chewing adding saliva, CHO digestion
Pharynx
Throat, where esophagus and trachea meet
Esophagus
Food shoot, peristalisis occurs
Stomach
Digest proteins
Small Intestine
Abosorption of nutrients
Large intestine
Water is absorbed make vitamin K
Anus
Remove feces
__peristalisis_________ is the slow rhythmic squeezing of food through the digestive
tract.
_Rugae__________ are folds of the stomach mucosa
The stomach functions in the digestion of _proteins_________________. The soupy
mixture of food in the stomach is called __chyme________. The _small
intestine___________ is the site of nutrient absorption. The 3 divisions of the small
intestine are called _duodenum______, jejunum___, and __ileum___________. The
villi are: _folds in the intestine_________________________
What are three functions of the small intestine?
1.absorb nutrients
2.main digestive site
3.break down lipids
Accessory digestive organs
Accessory Organs
Salivary glands
function
Make saliva
Teeth
chewing
Pancreas
Make pancreatic juice to digest fats
Liver
Make bile
Gall bladder
Store and concentrate bile
Starch digestion begins in the _mouth________ when Salivary amylase is added to the
food. The wad of food before you swallow it is called a __bolus_____________. Bile is
produced by the _liver_______ the gall bladder stores _bile_____and then ducts it into
the _small intestine____________ to aid in fat digestion.
The 2 types of digestion are _mechanical___________ digestion which is mixing food in
the mouth by tongue churning__ food in the stomach and _segmentation____ in the small
intestine. The second type is _chemical_____________ digestion which is the
enzymes____________ break down of food.
When swallowing food the __epiglottis______________ blocks the larynx so that food
does not go into the windpipe. The _caridioesphogeal___ is the valve or sphincter that
opens when food from the esophagus presses on it. Protein digestion begins in the
stomach____________. The enzyme __pepsin_________ digest protein and
_renine____________ digests milk. The only absorption the occurs in the stomach is of
_alcohol_____________ and __asprin____________.
The large intestine produces no _digestive____________ enzymes. Bacteria in the large
intestine produce vitamin ___K________ and release _gas_____________.
The 3 main sources of nutrients are ___CHO______________,
__Proteins_____________ and ___lipids________________.
Vitamins are used as ___catalyst___________________ with enzymes.
BMR stands for ______basal metabolic rate____________________________ it is the
amount of heat produced by the body at rest.
The __hypothalamus_________________ is the site of the body’s thermostat.
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