Tracheal gills - respiration, Biology

Assignment Help:

Tracheal Gills - Respiration

In many species of aquatic insects the air in the trachae is replenished by diffusion of oxygen via tracheal gills. Many aquatic insects carry a temporary store of air as a bubble on the body surface which replenishes the air in tracheae during submergence. In other aquatic insects a constant volume of air is held as a thin layer close to the body surface by water repellent hair forming a plasteron (or layer of air).

As long as water is well aerated insects with plasteron can remain submerged for many months. As much as one-third or half of the total capacity of the air system can be emptied in one expiration giving a renewal of about half the volume of the respiratory system. This is much greater than in a mammal at rest, where in each breath only 1/5 of the air contained in the system is renewed.


Related Discussions:- Tracheal gills - respiration

How a volcanic eruption removes all plant life, A volcanic eruption removes...

A volcanic eruption removes all plant life from a valley below the volcano Explain why succession following the eruption is likely to happen more quickly on the valley floor than o

Evolution, Who is the founder of theory survival of the fittest ?

Who is the founder of theory survival of the fittest ?

Types of ribosomes, TYPE S OF RIBOSOMES Ribosomes are of two types: - ...

TYPE S OF RIBOSOMES Ribosomes are of two types: - 1 . Procaryotic Ribosomes - 70 s = Occur in cytoplasm of prokaryotes, and also in mitochondria, and Chloroplast o

Explain chemically defined or synthetic media-culture media, Explain Chemic...

Explain Chemically Defined or Synthetic Media - Culture Media? Synthetic media are those media where detailed composition of the medium is known in terms of the chemical nature

Explain pathology of aortic stenosis, Q. Explain Pathology of aortic stenos...

Q. Explain Pathology of aortic stenosis? Congenital abnormalities of aortic valve may lead to unicuspid aortic valve. This may be dome shaped with central stenotic orifice. Uni

Explain phylum zooflagellata, Phylum Zooflagellata (Animal Flagellates)...

Phylum Zooflagellata (Animal Flagellates) 1) At some stage of life-cycle they have one or more flagella. 2) They feed heterotrophically by absorption or phagocytosis, and

What is asexual reproduction, What is Asexual Reproduction? Asexual re...

What is Asexual Reproduction? Asexual reproduction occurs in prokaryotes through the process of binary fission. Primitive eukaryotes and plants also reproduce by various t

Indications for surgery, Indications for Surgery :  Patients with moderate...

Indications for Surgery :  Patients with moderate or severe tricuspid regurgitation that is functional will need tricuspid annuloplasty at the time of correction of mitral valve d

Hydrogen-ion concentration, The acidity and alkalinity (pH) of an environme...

The acidity and alkalinity (pH) of an environment has a strong influence on the activity and stability of macromolecules such as enzymes. These enzymes play an important role durin

What is circulation, Q. What is circulation? Circulation is the movemen...

Q. What is circulation? Circulation is the movement of substances like gases within blood vessels and nutrients and cavities throughout the organism. Q. Do all animals have

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