Eustachian tube, Fallopian tube, abatis, abdomen, anus, bowels, brain, brains, canal, cecum, chitterlings, cockscomb, colon, duct, duodenum, emunctory, endocardium, entrails, fistula, foregut, giblets, gizzard, guts, haslet, heart, hindgut, home, inland, innards, inner mechanism, inside, insides, interior, internal, internals, intestines, inward, inwards, jejunum, kidney, kidneys, kishkes, large intestine
, liver, liver and lights, lung, marrow, meatus, midgut, municipal, national, native, ostium, oviduct, perineum, pore, pump, pylorus, rectum, salpinx, small intestine
, spleen, stomach, sweetbread, thoracic duct, ticker, tongue, tripe, tripes, ureter, urethra, vagina, vas, vermiform appendix, vessel, viscera, vitals, works
interiority, inside, interior, interspace, subsoil, substratum, intrados, contents, substance, pith, marrow, backbone, heart, bosom, breast, abdomen, vitals, viscera, entrails, bowels, belly, intestines, guts, chitterings, womb, lap, penetralia, recesses, innermost recesses, cave, interior, internal, inner, inside, inward, intraregarding, inmost, innermost, deep seated, gut, intestine
, intestinal, inland, subcutaneous, abdominal, coeliac, endomorphic, interstitial, inwrought, inclosed, home, domestic, indoor, intramural, vernacular, endemic, internally, inwards, within, in, inly, here in, there in, where in, ab intra, withinside, in doors, within doors, at home, in the bosom of one's family.