How do insects breath, and how do the 'organs' they use work?

Question

I need to know sometime soon, please! its for my hmwk! Fanx 4 everyone who replies.

Answer 1

In insects and some more advanced spiders, spiracles on their exoskeleton allow air to enter trachea (Solomon et.al., 2002). However, the two groups differ in how the tracheae function; in insects, the tracheal tubes primarily deliver oxygen directly to the animals' tissues
Many terrestrial arthropods have evolved a closed respiratory system composed of spiracles, tracheae, and tracheoles to transport metabolic gasses to and from tissue. Some terrestrial woodlice have evolved pseudotrachea, a system which is also called corpus alatum, and is made up of air tubes that delivers oxygen to their hemolymph; a similar system has been found in some caterpillars. The distribution of spiracles can vary greatly among the many orders of insects, but in general each segment of the body can have no more than one pair of spiracles, each of which connects to an atrium and has a relatively large tracheal tube behind it. The tracheae are invaginations of the cuticular exoskeleton that branch (anastomose) throughout the body with diameters from only a few micrometers up to 0.8mm. The smallest tubes, tracheoles, penetrate cells and serve as sites of diffusion for water, oxygen, and carbon dioxide. Gas may be conducted through the respiratory system by means of active ventilation or passive diffusion. Unlike vertebrates, insects do not generally carry oxygen in their hemolymph; this is one of the factors that may limit their size.

A tracheal tube may contain ridge-like circumferential rings of taenidia in various geometries such as loops or helices.

In the head, thorax, or abdomen, tracheae may also be connected to air sacs. Many insects, such as grasshoppers and bees, which actively pump the air sacs in their abdomen, are able to control the flow of air through their body. In some aquatic insects, the tracheae exchange gas through the body wall directly, in the form of a gill. Note that despite being internal, the tracheae of arthropods are shed during moulting (ecdysis).

Answer 2

The process is, an oxygen molecule in the atmosphere enters the SPIRACLE.
The oxygen molecule proceeds down the TRACHEAL which is a long air-filled branching tube.
It continues to move through branches until it reaches a fluid filled dead end called a
TRACHEOLE and dissolves in the fluid.
From the fluid it diffuses or moves across the wall of the tracheole into an insect cell such as a Muscle Cell
The movement through tracheal system of most insects rely solely on diffusion. Larger
insects can use their ABDOMINAL muscles
to force air in and out of the Tracheal system in a limited way. Should the tracheal system fill with water it would take much longer for the air to diffuse through the system. Therefore an insect can drown easily.

Answer 3

bugs breathe by using numerous holes of their thorax (the midsection section). they have comparable organs to people, at the same time with a innovations, a heart, muscle groups, and "guts" and reproductive organs. they have a apprehensive device and a digestive device, although they have not got all organs that different creatures have, such by way of fact the appendix. they're plenty greater straightforward than maximum mammals, reptiles, birds, and fish. maximum bugs have compound eyes, meaning that they see as though they have been finding by using a kaleidoscope.

Answer 4

Westneat et al. showed that insects like this wood beetle breathe by rapid cycles of tracheal compression and expansion.....
http://www.sciencemag.org/feature/data/bioimaging/bug.html

That site has a movie showing insect breathing.

Field Museum, Argonne discover insect breathing mechanism
http://www.anl.gov/Media_Center/News/2003/news030124.htm

Insect internal structure
http://www.insectidentification.net/insectinternalstructure.html

Answer 5

Insects breathe through tubes called 'spiracles', air moves in and out through the tubes, they work like our lungs. They take up oxygen and give out waste gases.
http://www.google.co.uk/search?hl=en&q=spiracles+insects+breathing&btnG=Google+Search&meta=
Try the second site on the list.