Digestion Flashcards
what are the functions of the digestive system
ingestion
grinding
digestion
absoprtion
elimination
prehension of food
defensive/offensive weapon
communication
grooming
what are lips for
prehension
what are teeth for
cutting, grinding
what is the tongue for
tactile, mastication
drives bolus into pharanyx
what is the esophagus
tube from mouth to anus
what are salivar glands
essential for digestion
what are functions of saliva
moisten, lubricates, protects, and partially digests
how much saliva is produced
10-12 liters
what are the 3 kinds of saliva glands
- paratid
- submaxiallary
3.sublingual
what so paratid glands do
secrete water and mucus
what are characteristics of submaxiallary glands
long/ narrow
how long does nutrients take to pass thru stomach
2-6 hours
what is the function of the stomach
breakdown protein
what does glandular mean
has secreations
what do neck chief, parietal cells, and body chief cells produce
1.mucin
2.HCL
3.enzymes
what is the function of the small intestine
nutrient digestion and absorption
how long/ how much does the S I hold
70 inches/ 12 gallons
what are the 3 sections of the SI
duodenum
jejunum
illiuem
what is the function of the duodenum
absorption
where does the duodenum starts and why
pylorus sphinctor to regulate flow
what are characteristics of the jejunum and the illiem
muscular and constricted
what are the function of jejumn and illiem
prevent backflow
what is villi
network of fingerlike prjections
what does the pancreas produce
digestive enzymes and bile
