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Nutrition Digestion
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What are the 2 types of digestion
chemical
mechanical
Primary control of the digestive track comes from
parasympathetic nervous system
What 3 things help regualte the digestive tract
Nerual
hormones
paracrine secreations
What hormones help to regulate the digestive tract
insulin, glucagon, and cortisol
What is the end product of carbs
glucose
What is the end product of proteins
amino acids
What is the end product of lipids
glycerol and fatty acids
What stimulates mechanical digestion
food in the mouth
Where does chemical digestion begin
in the mouth with saliva enzymes
What does saliva contain and what does it break down
amylase
starches
What is the formed in the mouth by the food and saliva
bolus
What closes over the trachea to prevent food from entering the lungs
epiglottis
muscular tube that connects the mouth to the stomch
esophagus
What is the movement that helps bolus travel through the esophagus to the stomach
peristalsis
What controls the movement of bolus into the stomach
cardiac sphincter
What is intrinsic factor essential for
vitamin B
12
absorption
Where is intrinsic factor released
stomach
What gets released from the stomach
intrinsic factor
gastrin
Where does protein digestion begin
stomach
What is the bolus called once it has entered the stomach and mixed with the gastric secreations
chyme
What secreates the gastric juices
cheif cells of the gastric glands
What enzyme begins the protein digestion in the stomach
pepsin
What is gastric juice composed of
water
mucus
hydrochloric acid
pepsin
What are the functions of hydrochloric acid in the gastric juice
kill bacteria
stops amylase
activates pepsin to start protein digestion
How is secreation of the gastric juices controlled
autonomic nervous system and hormones
What releases chyme into the small intestine
pyloric sphincter
What is the main site for chemical digestion of food
small intestine
What is the main site for absorption
small intestine
What aids in reabsorption in the small intestine
villi and microvilli
What secreations come from the small intestine
secretin
cholecystokinin
Author
tville01
ID
161123
Card Set
Nutrition Digestion
Description
Nutrition Digestion
Updated
2012-07-05T19:05:35Z
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