From Academic Kids
In insects and some more advanced spiders, spiracles allow air to enter trachea (Solomon et.al., 2002). However, unlike insects, tracheal tubes in spiders do not deliver oxygen to the animals tissues (Foelix, 1996). Instead the oxygen diffuses into the hemolymph (Foelix, 1996).
- Fouts, William. April 2003. Marine Science Dept. Orange Coast College.
- Solomon, Eldra, Linda Berg, Diana Martin. 2002. Biology. Brooks/Cole.
- Foelix, Ranier. 1996. Biology of Spiders. Oxford U. Press