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digestive system unit physio 2022-2023
digestive system
56
Physiology
Not Applicable
11/30/2022

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Term
mouth
Definition
receiver of food
Term
tongue
Definition
determines if food material is suitable for swallowing
Term
taste receptors
Definition
receives input on taste
Term
teeth
Definition
mechanically break down food into bolus
Term
bolus
Definition
ball of chewed up food from the mouth
Term
amylase
Definition
starch to maltose
Term
pharynx
Definition

common passageway for bolus, liquid, air

assists in action of swallowing

shared chamber for esophagus or trachea

Term
epiglottis
Definition
blocks bolus from entering trachea when swallowing
Term
trachea
Definition
leads to lungs
Term
esophagus
Definition

tube connecting to stomach

food, the track that food goes down

Term
esophagus lined with...
Definition
tissue that resists abrasions, extreme temperatures
Term
bolus moves through waves called...
Definition
peristalsis
Term
stomach
Definition

temporary storage of bolus before moving on

absorbs v B12

Term
chyme
Definition
mixed material in stomach
Term
churning
Definition
mechanically breaking down food
Term
protease
Definition
protein to peptides
Term
hydrochloric acid
Definition
kills/inhibits bacteria and helps protease work
Term
small intestine dimensions
Definition
20 feet long, 1,6 inch diameter
Term
small intestine
Definition
majority of digestion and absoprtion of material (90p nutrient absorption)
Term
small intestine filled with
Definition
villi
Term
villi:
Definition
absorbs macromlecules
Term
peptidase
Definition
peptides to amino acids
Term
sucrase
Definition
sucrose to glucose/fructose
Term
sucrose
Definition
also table sugar
Term
SI segments
Definition
duodenum, jejunum, ileum
Term
duodenum
Definition
receives chyme
Term
jejunum
Definition
chemical digestion and nutrient absorption
Term
ileum
Definition
controls flow to large intestine
Term
dudenum dimension
Definition
less than a foot long
Term
jejunum
Definition
8 ft long
Term
ileum
Definition
12 ft long
Term
lactase
Definition
lactose to glucose/galactose
Term
maltase
Definition
maltose to glucose
Term
glucose
Definition
simplest form of sugar
Term
liver 1
Definition
produces bile
Term
liver 2
Definition
regulates release of macromelecules absorbed by SI
Term
liver 3
Definition
metabolic regulation and hematological regulation (drugs and toxins)
Term
gallbladder
Definition
stores bile and modifies if needed
Term
liver placement
Definition
"yin-yang" with stomach
Term
gallbladder placement
Definition
tucked underneath liver
Term
bile
Definition
fat globules to fat droplets
(globs to little tiny globs)
Term
bile function
Definition
helps dilute and buffer the acidic chyme
Term
bile not bilase
Definition
-ase to break down, but bile buffer for acid too
Term
pancreas placement
Definition
located near stomach and duodenum
Term
pancreas function
Definition
produces pancreatic juice (enzyme mix) and buffers (neutralise stomach acid)
Term
amylase
Definition
starch to maltose
Term
lipase
Definition
fat globules to fat droplets
Term
nuclease
Definition
nucleic acids to nucleotides
Term
protease
Definition
proteins to peptide chains
Term
large intestine/anus aka
Definition
bowel
Term
LI segments
Definition
cecum, colon (4 parts), rectum
Term
cecum function
Definition
absorb
Term
colon function
Definition
(largest) absorb
Term
rectum
Definition
storage
Term
LI absorption
Definition
reabsorb water and vitamins
Term
colon parts
Definition
ascending, transverse, descending, sigmoid
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