Ram ventilation, Biology

Assignment Help:

Ram Ventilation

Some fish do not use pumping action for gill ventilation. It has been known for long that large tunas cannot be kept alive in captivity unless they are put in circular tanks where they can swim continuously. The fish swim with their mouths partly open and there are no visible breathing movements. Water flows continuously over their gills. This is known as ram ventilation.

It is now known that many fish breathe by pumping at low speed and change to ram ventilation at high speed. In this case the work of breathing is transferred from the muscles of the opercular pump to the muscles of the body and tail. However, ram ventilation is more economical as far as energy consumption is concerned than opercular pumps at high rates required for fast swimming.


Related Discussions:- Ram ventilation

Classification of phytoestrogens, Classification of Phytoestrogens? Phy...

Classification of Phytoestrogens? Phytoestrogens can be divided into 3 main classes: - Isoflavones, - Coumestans and - Lignans. All are diphenolic compounds with st

Zoonoses disease-vaccinia-like disease, Vaccinia-like disease Smallpox caus...

Vaccinia-like disease Smallpox caused by variola virus (VARV) has successfully been eradicated in the last quarter of the 20th century. However, vaccinia like viruses (VLVs) , viz.

Define integrity of epithelial tissues, Define Integrity of Epithelial Tiss...

Define Integrity of Epithelial Tissues? Vitamin A is essential for the integrity of the mucous-secreting cells. In fact vitamin A maintains the health of epithelial cells that

Eggs of frog, EGG S OF FROG This egg is round & its diameter is of 1-2...

EGG S OF FROG This egg is round & its diameter is of 1-2 mm. It is mesolecithal & has distinct animal pole & vegital pole. The nucleus is found in the centre of the anim

Explain trifluridine, Explain Trifluridine  (Viroptic)  Trifluridine is...

Explain Trifluridine  (Viroptic)  Trifluridine is a nucleoside analog active against herpes viruses, including acyclovir-resistant strains. Marketed in an ophthalmic preparatio

What is cytosolic cyclic amp, What is cytosolic cyclic AMP Healthy Pers...

What is cytosolic cyclic AMP Healthy Person P takes a new drug that is a member of a drug family that results in  constant levels of cytosolic cyclic AMP (cAMP) in one and only

How many asymmetric the amino acid serine have, How many asymmetric carbons...

How many asymmetric carbons does the amino acid serine have? Please explain with a strucutral diagram if possible.

Define effect micronutrients during pregnancy period, Define effect Micronu...

Define effect Micronutrients during pregnancy period? The need for many vitamins and minerals is increased during pregnancy. Since energy intake increases, the requirements for

Describe about transposition with large ventricular septal, Describe about...

Describe about Transposition of great arteries with large ventricular septal defect ? Transposition of great arteries with large ventricular septal defect: Usually the intercir

Packaging of meat products, P a ck a g i n g of Meat Products Me...

P a ck a g i n g of Meat Products Meat needs to be packaged to prevent contamination, color deterioration, loss of moisture, odor pickup, oxidative rancidity etc and pro

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