Spiracular control - respiration, Biology

Assignment Help:

Spiracular Control - Respiration

Another very interesting system of spiracular control is seen in some insect species. The spiracles are kept closed tightly most of the time. When the insect requires oxygen the spiracles open partially and close rapidly again. This 'fluttering' of the spiracle lets the air enter in a streaming movement without much loss of water.

Once a high partial pressure of oxygen is reached the spiracles close. While the oxygen is utilised by the tissues the carbon dioxide is stored temporarily in the tissues as bicarbonates thus keeping the Pco2 within tolerable limits, when Pco2, reaches a critical limit the spiracles open fully and expel the carbon dioxide in a single burst and the cycle is repeated.


Related Discussions:- Spiracular control - respiration

Human impact on the phosphorus cycle, Human Impact on the Phosphorus Cycle ...

Human Impact on the Phosphorus Cycle Like other biogeochemical cycles, human activities have altered the phosphorus cycle. Human beings mine phosphate rocks and guano deposits

How phytohormones help development of parthenocarpic fruits, How phytohormo...

How phytohormones help the development of parthenocarpic fruits? The Parthenocarpic fruits are those produced with no fecundation. Several plants naturally make parthenocarpic

Microfilaments comprise of the proteins, Microfilaments comprise of the pro...

Microfilaments comprise of the proteins The microfilaments comprise of the proteins, actin and myosin, the same contractile proteins that are found in skeletal muscle cells. Si

How does a population differ from a community, How does a population differ...

How does a population differ from a community? A population having of all members of a single species that live in an area, while a community consists of all organisms of any s

Waste produced during surgical process, Q. Waste produced during surgical p...

Q. Waste produced during surgical process? Regular garbage: Regular garbage generated from clerical office procedures or kitchen waste should be disposed of within the usu

Which are the most important inorganic molecular substances, Q. Which are t...

Q. Which are the most important inorganic molecular substances for living beings? Ans. The most important inorganic substances for living beings are mineral salts, water,

Mineralisation and humification-formation of soil, Mineralisation and Humif...

Mineralisation and Humification As a result of physical weathering, the rocks are broken down into smaller particles. But this is not the true soil, and plants cannot grow well

Cows of identical genotype - polled condition, 1. A roan bull which is hete...

1. A roan bull which is heterozygous for the polled condition is mated to several cows of identical genotype to his. How many roan, polled animals should be produced out of 16?

Lymhatic system, composition formation and circulation of lymph

composition formation and circulation of lymph

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd