更多proctodaeum例句

1. The third or outermost chamber, the proctodaeum, is closed externally by the sphincter ani; the orifice is quite circular.
2. Renal excretory caeca (Malpighian tubes) are developed from the proctodaeum (not from mesenteron as in scorpion and Amphipoda).
3. Renal caecal tubes (Malpighian tubes) open into the proctodaeum.