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

Gas exchange, Gas Exchange Gill surface area must be large enough to p...

Gas Exchange Gill surface area must be large enough to provide adequate exchange of gases. Therefore, highly active fish have largest relative gill area. Figure compares highl

Explain the microscope, Explain the Microscope? Microscope is a powerfu...

Explain the Microscope? Microscope is a powerful and crucial basic tool in the field of microbiology. Microbiology, as we have already studied in our theory Course, is the scie

Explain human fetal circulation and the adult circulation, Concerning the m...

Concerning the mixture of arterial with venous blood what is the difference between the human fetal circulation and the adult circulation? In the human fetal circulation there

Estimate daily energy requirement and safe protein intake, Estimate Daily e...

Estimate Daily energy requirement and safe protein intake? The estimated mean daily per capita energy requirement of 2070 Kcal rounded up  to 2100 Kcal is based on WHO technica

What are the nutritional components of the foods we consume, What are the n...

What are the nutritional components of the foods we consume? The foods that we consume are composed of varying quantities of the following nutritionally important components:

Explain about monocot plants and dicot plants, What are the major morpholog...

What are the major morphological differences between monocot plants and dicot plants? The main differentiation criteria among monocots and dicots are: number of cotyledons (see

Risk assessment of biological hazards, Risk Assessment of Biological Hazard...

Risk Assessment of Biological Hazards Biological hazards of concern to public health include pathogenic strains of bacteria, viruses, helminths, protozoa, algae and certain tox

Emf, In a neuron with a resting potential of -65 mV, the distribution of wh...

In a neuron with a resting potential of -65 mV, the distribution of which ion across the neuronal membrane represents the greatest potential electromotive force (EMF)? A. Potassiu

Epidemiology, The epidemiology of acute rheumatic fever (ARF) is closely co...

The epidemiology of acute rheumatic fever (ARF) is closely connected with that of group-A beta haemolytic streptococcal pharyngitis, both have a maximum incidence in the age group

What is moderate level of lactase activity, Q. What is Moderate level of La...

Q. What is Moderate level of Lactase activity? Intake of milk is restricted depending on the tolerance. Fermented and cooked form of milk should be preferred as it is better to

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