digestive system Flashcards

1
Q

digestive system

A

converts food to raw materials that build and fuel body’s cells

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2
Q

Alimentary canal/GI tract

A

continuous muscular digestive tube that winds through the ventral body- open both ends

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3
Q

alimentary canal function

A

digests, absorbs,

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4
Q

alimentary canal structures/organs

A

oral cavity, pharynx, esophagus, stomach, small and large intestine, rectum, anus

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5
Q

Accessory digestive structures (function)

A

Produce secretions that contribute to the breakdown of food

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6
Q

Accessory digestive structures/organs

A

teeth, tongue, gallbladder, salivary glands, liver and pancreas

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7
Q

ingestion

A

taking foods/liquids in via the mouth

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8
Q

propulsion

A

moves food through the alimentary canal

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9
Q

deglution/swallowing

A

voluntary act of moving food into alimentary canal

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10
Q

buccal phase

A

compress bolus against hard palate, retracts tongue forcing bolus into oropharynx. (voluntary)

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11
Q

pharyngeal phase

A

tactile receptors on the uvula are stimulated, medulla oblongata directs muscle contraction in pharyngeal muscles

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12
Q

esophageal phase

A

a bolus is pushed toward the stomach by peristaltic waves, approach of bolus triggers opening of esophageal sphincter

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13
Q

oral cavity

A

start of alimentary canal

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14
Q

physical digestion

A

mastication, chewing

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15
Q

chemical digestion

A

break down to simpler compounds

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16
Q

salivary gland

A

secretes saliva to aid in chemical digestion

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17
Q

pharynx

A

3 parts, nasopharynx, oropharynx, hypopharynx

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18
Q

esophagus

A

smooth muscle in throat, swallowing is digestion

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19
Q

stomach

A

amylase (converts starch and glucose), bile (secreted by liver, stored in gallbladder),

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20
Q

pancreatic lipase

A

usually secreted by the pancreas and transferred to the duodenum to participate in the hydrolysis and digestion of fat, cholesterol esters, and fat-soluble vitamins

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21
Q

pepsin

A

a stomach enzyme that serves to digest proteins found in ingested food.

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22
Q

small intestine

A

villi lines to absorb nutrients, duodenum, jejunum, ileum

23
Q

duodenum

A

primary digestive site

24
Q

mesentary

A

connective tissue

25
large intestine/colon
muscular, hostra, mostly compacts, absorbs water, salt changes chyme to feces
26
cecum
iliocecal valve connects, pouch, regulates flow
27
appendix
component of lymphatic, gets blocked
28
ascending colon
dehydrates feces, where E-coli is
29
liver
regenerative, not actually in alimentary canal
30
digestion (sigmentation)
rythmic local contraction, churning
31
peritenium
membrane that holds together, visceral on top, parietal lines walls, mesentary routes for nerves
32
Alimentary tube layers (superficial to deep)
adventitia, muscularis propria, submucosa, mucosa
33
GI tract (in order)
OLESP DJ ICAT DSRA Mouth- oropharynx, laryngopharynx, esophagus, stomach, pyloric sphincter, duodenum, jejunum, ileum, cecum, ascending colon, transverse colon, descending colon, sigmoid colon, rectum, anus
34
amylase
in saliva, works in mout, starch
35
bile
in liver, works in duodenum, fats
36
pancreatic lipase
duodenum, produced in pancreas/liver
37
pepsin
secreted by gastric glands, digests protein
38
bolus
saliva moistens and breaks down food, chewed up food
39
chyme
left stomach, chemical break down, paste
40
feces
anal canal, defacation, dehydrated
41
draw digestive system (liver, pancreas, gallbladder, common hepatic duct, cystic duct, pancreatic duct, common bile duct)
42
peristalsis
act of squeezing food- move through organs
43
liver (functions)
metabolic, regulatory, regenerates, 2 months, removes toxins, clotting factors, nutrients, cholesterol
44
hepatitis (how, what, spread)
inflammation of the liver, alcohol, toxins, sexual contact, caring for ill
45
villi- where +what
in ileum, finger projects, transport nutrients
46
functions of digestive system
converts food to build cells, nutrients and rid body of remains
47
peritoneum --> food?
membrane lining interior of abdominal cavity, surface of organs
48
mastication
Chewing
49
can you drink water on your head
yes, contractions are forceful
50
3 parts of small intestine
Duodenum, jejunum, ileum
51
villus - function +place
in intestine, finger like structure--> increase surface area
52
carbohydrate digestion site (enzyme)
small intestine, amylase
53
protein digestion site
amylase and lipase, small intestine
54
lipid digestion site
small intestine