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

Can you explain the mycorrhizas, Q. What are the mycorrhizas? How does each...

Q. What are the mycorrhizas? How does each participant benefit in this ecological interaction? Mycorrhizas are mutualist ecological interactions between some plants roots and f

Define work capacity that is relevant to sports nutrition, Define Work Capa...

Define Work Capacity that is relevant to sports nutrition? There are generally two areas of work capacity that is relevant to sports nutrition one is aerobic capacity and the o

Why does thymine replace uracil in dna, Q. Why does thymine replace uracil ...

Q. Why does thymine replace uracil in DNA? The difference between DNA and RNA is existence of a hydroxyl (-OH) group on 2' carbon of the ribose sugar in the backbone. Removal o

Illustrate the removal of carbon dioxide from the body, Which of the follow...

Which of the following processes in capillaries in the lung assist in the removal of carbon dioxide from the body? A. Net flux of carbon dioxide from red blood cells into plasm

Draw a graph for an iv multiple infusion of a drug, Draw A graph for an IV ...

Draw A graph for an IV multiple infusion of a drug, and label on the graph where the trough (predose) blood draw would be collected and where the peak (postdose) blood draw would b

Minerals requirements for dyslipidemia, Q. Minerals requirements for dyslip...

Q. Minerals requirements for dyslipidemia? Minerals: The three most important minerals are chromium, zinc and magnesium. These minerals play a critical role in maintaining p

Clinical symptoms of hiv, Clinical symptoms of HIV Generally, a person ...

Clinical symptoms of HIV Generally, a person infected with HIV does not show any apparent symptoms for a number (3 to 12) of years. Ten to fifteen percent infected people may,

Agro industrial-chelating agents, Chelating agents Oxalates: Only a ...

Chelating agents Oxalates: Only a few plants contain sufficient amounts of sodium and potassium oxalate to be considered toxic. Moreover, ruminants that consume these plants

Spoilage by fungi and bacteria, Q. Explain Spoilage by fungi and bacteria? ...

Q. Explain Spoilage by fungi and bacteria? The dominant spoilage organisms in fruits are fungi, as their pH is low (normally 5),whereas the pH of vegetables is fiom 5.0 to 7

Normal color vision- color blindness, If a color blind man marries a woman ...

If a color blind man marries a woman pure for normal color vision, it's probable that one of the below situations may result. Is it possible that a) All the children would be

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