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

Left internal mammary artery and coronary artery, Left internal mammar...

Left internal mammary artery (LIMA): It is most often used for bypassing left anterior descending (LAD) coronary artery and its diagonal branch. The right internal mammary

Explain adverse effects of adefovir dipivoxil, Adverse Effects of Adefovir ...

Adverse Effects of Adefovir dipivoxil  Doses of adefovir used for HBV are generally well tolerated but may be associated with asthenia, headache, diarrhea and abdominal pain. H

Explain adverse effects of interferon alfa, Adverse Effects Of interferon a...

Adverse Effects Of interferon alfa Intramuscular or subcutaneous injection of interferon is commonly associated with an influenza-like syndrome, especially during the first wee

Define the nutritional assessment methods, Define the Nutritional assessmen...

Define the Nutritional assessment methods? Nutritional assessment methods commonly used are enumerated herewith. 1. Bodyweight measurement s remain to be the most practical

How does the inflammation mechanism work, How does the inflammation mechani...

How does the inflammation mechanism work? When some tissue injury happens histamine and other vasoactive substances (known as mediators of inflammation) are released, they caus

Rhinosporidiosis (fungal-like agent), Rhinosporidiosis (Fungal-like agent) ...

Rhinosporidiosis (Fungal-like agent) Rhinosporidiosis is a chronic, non-fatal, granulomatous mycotic infection of nasal mucosa caused by Rhinosporidium seberi. R. seberi is curren

How does the contraceptive diaphragm work, How does the contraceptive diaph...

How does the contraceptive diaphragm work? What are the limitations of this contraceptive method? The contraceptive diaphragm is an artifact made of latex or plastic that when

Explain penicillin allergy, Penicillin allergy Cefazolin is often used ...

Penicillin allergy Cefazolin is often used for prophylaxis in penicillin-allergic patients, but such patients rarely may have allergic reactions to cephalosporins. When allergy

Explain elephant trunk technique in aortic aneurysm, Explain Elephant Trunk...

Explain Elephant Trunk Technique in Aortic Aneurysm ? Elephant Trunk Technique :  When aneurysm involves arch of the aorta and large portion of descending thor

Explain the peripheral resistance, Explain the Peripheral Resistance Re...

Explain the Peripheral Resistance Resistance offered by arterioles or resistance vessels, as you have read above, is termed as peripheral resistance. Changes in peripheral resi

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