1. Section 4: Digestive System

3. Mucosa artery vein Submucosa Lumen: central cavity Muscularis Serosa
nerve
supply
lymph
vessel
artery
vein

4. Digestive tract organs
Liver
Gallbladder
Pancreas
Digestive tract organs
Esophagus
Stomach
Small intestine
Large intestine
Rectum
Mouth
Pharynx
Accessory organs
Salivary glands
Anus

5. hard palate
soft palate
uvula
tonsil

6. sphincter relaxes and
food enters stomach.
hard palate
food bolus
pharynx
soft
palate
trachea
(airway)
covered when swallowing
Esophagus
is closed when breathing.
Epiglottis – covers trachea
when swallowing
Peristalsis
esophagus
peristaltic
wave
glottis
bolus
stomach
tongue

7. Mucosa - has rugae.
Muscularis - three layers
of muscle.
cells that secrete
gastric juice
esophagus
cardiac
sphincter
pyloric
gastric pit
gastric gland
Gastric glands

8. Small intestine
Section of intestinal wall
lumen
lymph
nodule
villus
lacteal
arteriole
lymphatic
vessel
venule
goblet
cell
blood
capillaries

9. internal anal sphincter external anal sphincter
appendix
orifice of
transverse colon
ascending
colon
descending
small
intestine
cecum
anal canal
internal anal sphincter
external anal sphincter
anus
sigmoid colon
rectum

10. gallbladder
common bile duct
duodenum
bile
common hepatic duct
pancreatic duct
pancreas
pancreatic
juice
Liver

11. Digestive Enzymes