i know it sounds like a joke but i really want to know
2007-01-19 08:55:32 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Zoology
Ants are arthropods they have a dorsal heart located just under the exoskeleton of their thorax. Their body is divided into 3 parts: the head, thorax and abdomen. The thorax contains the legs and wings if they posses them.
2007-01-22 10:18:04 · answer #1 · answered by ATP-Man 7 · 0⤊ 0⤋
They have an enlarged artery that pumps their "blood" in their thorax. Their circulatory system is an "open system" which means it isn't as efficient as in higher animals (like us) with closed systems. As a result ants also depend on muscle movement to push their "blood" around. So they move blood by a combination of skeletal muscles and the enlarged artery (heart) in the thorax.
2007-01-19 09:05:02 · answer #2 · answered by lightening rod 5 · 1⤊ 1⤋
Ants don't have hearts. Seriously; your circulatory system is designed to circulate oxygen and nutrients to all the cells in your body, because air doesn't just travel through your tissues very efficiently by itself. Insects, in contrast, breathe through pores in their exoskeletons called spiracles, and the air travels through progressively smaller passages called trachae until it diffuses into their tissues. Because the oxygen can't travel very far without some sort of circulatory system, this limits how large an insect can grow -- that's why insects can't grow very large (among other reasons we won't go into here)
So, no circulatory system = no heart. No need for one, they way they've built.
2007-01-19 09:03:46 · answer #3 · answered by theyuks 4 · 0⤊ 2⤋
in their feet!!!!!(?) i've heard this joke before
2007-01-19 09:18:24 · answer #4 · answered by Anonymous · 0⤊ 2⤋