颌

上颌

shàng hé

maxilla (upper jaw)

上颌骨

shàng hé gǔ

maxilla (upper jaw)

下颌

xià hé

lower jaw

下颌下腺

xià hé xià xiàn

submandibular salivary gland

下颌骨

xià hé gǔ

lower jaw

有颌

yǒu hé

jawed (fish)

无颌

wú hé

jawless (primitive fish)