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

Amoeboid movement, Normal 0 false false false EN-IN X...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Cavities in cork, Q. In 1665 Robert Hooke, an English scientist, published ...

Q. In 1665 Robert Hooke, an English scientist, published his book Micrographia, in which he explained that pieces of cork viewed under the microscope presented small cavities simil

Diabetes mellitus, 1. How often should she have Glycated hemoglobin (HgbA1C...

1. How often should she have Glycated hemoglobin (HgbA1C) drawn?  What percentage is desired? 2. How often should she see an ophthalmologist or optometrist? 3. What should be

What is cilia and flagella, What is Cilia and Flagella? The surfaces of...

What is Cilia and Flagella? The surfaces of many eukaryotic cells bear cilia or flagella, built from specialized microtubules. Cilia are tiny brushlike hairs, and flagella are

Regulation of senescence, Regulation of Senescence Senescence is a par...

Regulation of Senescence Senescence is a part of a developmental sequence of events and has to be a controlled process. You must have seen that if you cut twigs having leaves

Loading and unloading of sieve tubes, Loading and Unloading of Sieve Tubes ...

Loading and Unloading of Sieve Tubes In order to understand the loading of food from manufacturing leaf cells to sieve tubes we must examine the anatomy of a minor vein shown

What is pulmonary venous congestion ?, Q. What is Pulmonary Venous Congesti...

Q. What is Pulmonary Venous Congestion ? In pulmonary venous hypertension, the earliest change is an increase in calibre of the upper lobe vessels. If the upper lobe veins meas

Sutures are also classified by thread diameter, Sutures are also classified...

Sutures are also classified by thread diameter: Thread materials range in diameter from 1 to 10 with the higher number corresponding to the thinner, more delicate thread. In

Electrochemical gradient, Describe forces that contribute to cell''s electr...

Describe forces that contribute to cell''s electrochemical gradient. How does electrochemical gradient influence ion transport?

Illustrate about human eyes, Eyes We have a pair of eyes. They are held...

Eyes We have a pair of eyes. They are held in socket of the skull by four rectus muscles and two oblique muscles. These muscles control the movements of the eyes. The wall of t

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