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

Treatment of sewage, The sewage treatment methods can be classified into th...

The sewage treatment methods can be classified into the following heads: Primary treatment Secondary treatment Tertiary treatment 1. Primary Treatment: The primary

Define intentional adulteration - types of adulteration, Define Intentional...

Define Intentional Adulteration - Types of Adulteration? In intentional adulteration, the substance is added, removed or substitute knowingly by the adulterator for the purpose

Explain horizontal full mucoperiosteal flaps, Explain Horizontal Full Mucop...

Explain Horizontal Full Mucoperiosteal Flaps - Endodontic Surgery      a) Also called:  Envelope flap, b) Only a Horizontal incision, without the vertical releasing incision

Explain procedure for acid fast staining, Explain Procedure for Acid Fast S...

Explain Procedure for Acid Fast Staining? Carry out the exercise using the steps enumerated herewith. 1. Label the clean, non-greasy slides and make smears of M. smegmatis,

Benefits of computerization, Benefits of Computerization Computerizati...

Benefits of Computerization Computerization were the following benefits in nursing: Improved professional care  Better accuracy (by decreasing human error)  Effect

Internal structure of the heart of man, Internal structure of the heart of ...

Internal structure of the heart of man Internally there are four chambers in the heart. The upper two chambers are called auricles and the lower two chambers are called vent

Postparturient haemoglobinuria, Post pa r turient haemoglobinuria It...

Post pa r turient haemoglobinuria It is also known as puerperal haemoglobinuria or nutritional haemoglobinurea and results in intravascular haemolysis, haemoglobinuria and a

Explain properties of amylopectin and amylose, Properties of Amylopectin an...

Properties of Amylopectin and Amylose In plants, starch is packaged in granules, which vary in their  shape and size, when isolated from different sources. The size of these gr

Types of blastula, TYPES OF BLASTULA - Blastulas are of following type ...

TYPES OF BLASTULA - Blastulas are of following type -                    1 .       STEREOBLASTULA - The blastocoel is very small. It's blastomere are less in num

Uses of grafting, Uses of Grafting Grafting helps to preserve and pe...

Uses of Grafting Grafting helps to preserve and perpetuate varieties that cannot reproduce by vegetative method. Grafting changes less useful varieties to more desirable

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