abdomen
anus
appendix
blind gut
bowels
brain
cecum
colon
duodenum
endocardium
foregut
giblets
gizzard
guts
heart
hindgut
innards
inner mechanism
insides
internals
intestine
intestines
inwards
jejunum
kidney
kishkes
large intestine
liver
liver and lights
lung
midgut
offal
perineum
pluck
pump
pylorus
rectum
small intestine
spleen
stomach
stuffing
ticker
tripes
vermiform appendix
viscera
internal organ
viscus