胸腔[kyoukou] thorax
口腔外科[koukuugeka] dental surgery
耳腔[jikou] inside the ear
体腔[taikou] body cavity
体腔壁[taikouheki] body wall

内腔[naikou] lumen (anatomical)
口腔[koukou] the oral cavity
鼻腔[bikou] the nasal cavity
腹腔[fukkou] abdominal cavity
口腔癌[koukougan] oral cancer

せん状骨[senjoukotsu] scaphoid bone (in wrist near thumb)
遺骨[ikotsu] remains
化骨[kakotsu] ossification
会厭軟骨[eennankotsu] epiglottis
がい骨[gaikotsu] skeleton

雁骨[kariganebone] scapula
気骨[kikotsu] (moral) backbone
侠骨[kyoukotsu] chivalrous spirit
胸骨[kyoukotsu] breastbone
筋骨[kinkotsu] muscles (sinews) and bones

延髄[enzui] medulla oblongata
骨髄[kotsuzui] bone marrow
歯髄[shizui] (tooth) pulp
心髄[shinzui] true meaning
精髄[seizui] essence

脊髄[sekizui] spinal cord
脳髄[nouzui] brain
髄虫[meichuu] pyralid larva
骨髄炎[kotsuzuien] osteomyelitis
脊髄炎[sekizuien] myelitis