Do they have little hearts and lungs? Do insects have little blood vessels? Do insects bleed when injured?
2006-08-22 08:44:46 · 10 answers · asked by Barbie 1 in Science & Mathematics ➔ Zoology
Some good answers above.
They need oxygen.
They have little hearts, but the blood is in an "open circulatory system."
They do not have lungs. Terrestrial insects have internal air vessels... spongy! They pump air through those by motion of the abdomen, and the air goes through holes called spiracles.
Some aquatic insects have oversized feathery gills.
Insects do bleed when injured.
2006-08-22 12:38:48 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Yes, they usually diffuse it through their skin.
Much insect blood is not controlled by vessels, but rather just floats around in the bodies of the insects like a soup.
2006-08-22 08:54:27 · answer #2 · answered by QFL 24-7 6 · 0⤊ 0⤋
yes, yes & no, yes, yes. Yes to everything but they don't have lungs. They breath through little openings called spiracles and into trachea which limits insect size. Dragonflies used to be much bigger because the concentration of oxygen in the atmosphere was much higher at the time but now there is not enough oxygen to diffuse into a dragonfly more than a few inches long.
2006-08-22 08:59:11 · answer #3 · answered by JimZ 7 · 0⤊ 0⤋
Though they dont have blood, they do have lymph called hemolymph and no, its not red as the insects dont have hemoglobin. And ofcourse they need oxygen to live.
2006-08-22 09:06:44 · answer #4 · answered by tans 1 · 0⤊ 0⤋
of course by the way nice face in your yahoo avatar of course insects breathe so we spray insecticides because it make them don't breathe and die the fact that insects too tiny don't mean that they don't have organs or blood but their organs are so simple not complicated as yours
2006-08-22 08:56:49 · answer #5 · answered by Anonymous · 0⤊ 0⤋
Yes they do. They have tracheal respiration (!?) and a heart, which is something like a pipe contracting, but it's still a heart. and they have blood too, although it's not red like ours because they don't have hemoglobin.
2006-08-22 08:59:17 · answer #6 · answered by weaponspervert 2 · 0⤊ 0⤋
Yes. They respire through tiny holes called spiracles.
2006-08-22 08:53:41 · answer #7 · answered by Anonymous · 0⤊ 0⤋
the answer to this question varies with each insect....
2006-08-22 08:52:42 · answer #8 · answered by Just_A_Boy 4 · 0⤊ 0⤋
yes they must have O2 to live
2006-08-22 08:52:44 · answer #9 · answered by smitmeister_99 3 · 0⤊ 0⤋
yes, yes, and yes! they have all of those. if they didnt then the would be artificial things which they're not. ther living things!!!!!!!
2006-08-22 08:53:25 · answer #10 · answered by Anonymous · 0⤊ 1⤋