英文關鍵字
abdomen
ache
acid
anatomy
arteries
background
biology
body
burning
care
circulatory
cross
diagram
diet
dieting
digesting
digestion
digestive
duodenum
eating
esophageal
esophagus
food
gastric
health
healthy
human
illustration
indigestion
internal
medical
medicine
nerves
organ
organs
pain
people
problems
pyloric
science
section
shape
skeleton
sphincter
stomach
stomache
surgery
system
ulcer
veins
vessels
zoom