唾液腺（salivary glands)の種類
耳下腺（じかせん、parotid gland）：par（傍に）と otis（耳）が語源
顎下腺 （がっかせん、submandibular gland またはsubmaxillary glandとも呼ばれる）
舌下腺 sublingual gland
- 腺液唾— 臨床と研究のための解剖学 2009 https://www.jstage.jst.go.jp/article/jjoms/57/7/57_384/_pdf/-char/ja
https://www.drfrancishall.co.nz/parotid-tumours-and-salivary-stones/
https://www.drstevensperry.com/post/parotidectomy-for-parotid-tumors
There are three major salivary glands located bilaterally outside the oral cavity with long ducts that convey the saliva to the mouth. https://link.springer.com/chapter/10.1007/978-3-031-38567-4_6
