Secretions that occur through ducts on the surface of the body, in the digestive tract, or in body cavities. In addition to sweat, milk, sebum, and digestive juices, the mucus on the surface of fish's bodies, the shells of shellfish, the wax of honeybees, the silk spun by spiders and silkworms, and the venom of poisonous snakes and bees are all exocrine secretions. Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information |
体表,消化管,体腔などに導管を通じて行なう分泌。汗,乳汁,皮脂,消化液のほかに,魚類の体表粘液,貝類の殻,ミツバチのろう,クモやカイコの紡出する糸,毒ヘビやハチの毒液なども外分泌作用によるもの。
出典 ブリタニカ国際大百科事典 小項目事典ブリタニカ国際大百科事典 小項目事典について 情報 |
…the treaty between Holy Roman Emperor Henry V an...
Located at Washuyama Kusumihana in Ohata, Kurashik...
...The first puppet play was performed in January...
The capital of Teruel Province in Aragon, central...
…A mineral belonging to the alkali pyroxene famil...
In addition to wind waves, which are visible when ...
A biennial plant of the Scrophulariaceae family. I...
Just before his death at the age of 70 in 1966, C...
...A product made by molding and hardening concre...
He was a court painter in the Qing Dynasty in Chin...
…The committee for the selection of the emperor (...
The Joint Declaration between Japan and the Union...
…10%, 6%, and 22% of the world's copper, lead...
...The umbilicus is a hard, umbilicus-like bundle...
The name of the East Japan Railway Company's ...