EXSS 256 Digestive System Notes 2026 – Complete Study Guide & Exam Review

EXSS,./256:,./Digestive,./System


Upper,./GI,./-,./correct,./answer,./✔ ✔
mouth,,./pharynx,,./esophagus,,./stomach



Lower,./GI,./-,./correct,./answer,./✔ ✔ intestines,,./anus



Functional,./segments,./-,./correct,./answer,./✔ ✔
mouth,,./pharynx,,./esophagus,,./stomach,,./intestines


Accessory,./organs,./-,./correct,./answer,./✔ ✔
teeth,,./tongue,,./salivary,./glands,,./liver,,./gallbladder,,./pancreas



Order,./of,./transport,./-,./correct,./answer,./✔ ✔
mouth,,./pharynx,,./esophagus,,./stomach,,./SI,./(duodenum,,./jejunum,,./ileum
),,./LI,./(cecum,,./ascending,./colon,,./transverse,./colon,,./descending,./colon,,./sig
moid,./colon),,./rectum,,./anus


Functions,./of,./the,./digestive,./system,./-,./correct,./answer,./✔ ✔
ingestion,,./secretion,,./mixing,./and,./propulsion,,./digestion,,./absorption,,./de
facation


Ingestion,./-,./correct,./answer,./✔ ✔ -,./intake,./of,./food

,-,./mouth


Secretion,./-,./correct,./answer,./✔ ✔ -
,./release,./of,./water,,./acids,,./buffers,./and,./enzymes,./into,./the,./GI,./tract



-,./aid,./in,./digestion
-,./mainly,./in,./the,./mouth,,./but,./also,./esophagus,,./stomach,./and,./intestines



Mixing,./and,./Propulsion,./-,./correct,./answer,./✔ ✔ -
,./churning,./and,./propelling,./of,./food,./thorough,./the,./GI,./tract



-,./swallowing,./in,./the,./mouth
-,./peristalsis,./in,./the,./esophagus,,./stomach,./and,./intestines


Mechanical,./Digestion,./-,./correct,./answer,./✔ ✔ -
,./physical,./movements,./through,./the,./GI,./tract,./that,./aid,./in,./chemical,./digestio


n
-,./chewing,./in,./the,./mouth
-,./churning,./in,./the,./stomach,./
-,./segmentation,./in,./small,./intestine



Chemical,./Digestion,./-,./correct,./answer,./✔ ✔ -
,./catabolic,./reactions,./to,./break,./down,./large,./molecules,./into,./smaller,,./usable


,./ones

, -,./mainly,./in,./SI


Absorption,./-,./correct,./answer,./✔ ✔ -
passage,./of,./nutrients,./from,./GI,./tract,./to,./blood,./or,./lymph,./for,./distribution,./t
o,./cells
-,./mainly,./in,./SI,,./but,./also,./in,./LI



Defecation,./-,./correct,./answer,./✔ ✔ -,./elimination,./of,./feces

-,./rectum,./and,./anus


Gingiva,./-,./correct,./answer,./✔ ✔ gums



Palates,./-,./correct,./answer,./✔ ✔ roof,./of,./the,./mouth



Hard,./palate,./-,./correct,./answer,./✔ ✔ -,./anterior

-,./maxilla,./and,./palatine,./bones
-,./bony,./separation,./between,./oral,./and,./nasal,./cavities



Soft,./palate,./-,./correct,./answer,./✔ ✔ -,./posterior,./

-,./muscular,./arch