2007-06-12 04:49:28 · 7 answers · asked by goth :) 1 in Science & Mathematics ➔ Biology
Spiders have an alimentary canal, a blood vascular system, a breathing system, a nervous system, an excretion system, a reproduction system and a set of glands for the production of silk.
The most observable organs are the eyes and which were described earlier. Beside the eyes the spider has tactile sensors, tasting sensors, slit organs and proprioreceptors.
The central nervous system of a spider is in the cephalothorax. It includes the brain, which is connected to a large group of nerve cells called the gandlion. Nerve fibers from the brain and gandlion run throughout a spider's body. The nerve fibers carry information to the brain from sense organs on the head, legs, and other parts of the body. The brain can also send signals through the nerve fibers to control the activities of the brain.
2007-06-12 04:53:23 · answer #1 · answered by Curiosity 7 · 2⤊ 0⤋
They have all the brains they need to protect themselves and survive during their given life span! Look at the web they spin - they seem to be artistic and intelligent too! The very invention of internet and web-sites have some cosmic connection with that too!
2007-06-12 11:55:40 · answer #2 · answered by Sami V 7 · 1⤊ 1⤋
WHY NOT GIVE A SPIDER A PUZZLE AND IF IT SOLVES IT THEN IT MUST HAVE BRAINS
2007-06-12 11:53:12 · answer #3 · answered by Anonymous · 0⤊ 1⤋
the same as large spiders only smaller
2007-06-12 11:52:28 · answer #4 · answered by Anonymous · 0⤊ 2⤋
yes they ahve a nervous system so they have a simple brain
http://www.infovisual.info/02/052_en.html
2007-06-12 13:05:21 · answer #5 · answered by ~*tigger*~ ** 7 · 1⤊ 0⤋
i guess they have brains
2007-06-12 11:57:27 · answer #6 · answered by Angel N 2 · 0⤊ 1⤋
yes...they have brain...
2007-06-12 11:59:15 · answer #7 · answered by kumar 2 · 0⤊ 0⤋