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

Demonstrate the structure of mitochondria, Demonstrate the structure of mit...

Demonstrate the structure of mitochondria The structure of mitochondria has been examined in great detail with the aid of the electron microscope, and it is now possible to des

Protein case study, DK is a year old female who was born after a normal pre...

DK is a year old female who was born after a normal pregnancy and delivery.  At 17 months of age DK showed signs of speech delay, increased lethargy and vomiting up to four times p

Requirements of vitamins during congestive cardiac failure, Q. Requirements...

Q. Requirements of vitamins during congestive cardiac failure? Vitamins: The requirements of all vitamins remain the same as per the RDI. If the patient is also suffering from

What is the ph inside the stomach, Q. What is the pH inside the stomach? Wh...

Q. What is the pH inside the stomach? Why is there a need to keep that pH level? How is it maintained? Which are the cells that produce that pH? The normal pH of the gastric ju

Avian influenza (ai), A v i a n influenza (AI) One of only two 'Lis...

A v i a n influenza (AI) One of only two 'List A' diseases of poultry targeted for emergency disease control measures by OIE, avian influenza is a highly contagious viral d

Describe food applications of alginate, Food Applications of alginate O...

Food Applications of alginate One of the most unusual properties of the alginates has been the ability of soluble alginate salts to produce attractive, edible gels or jellies.

General nursing responsibilities in diagnostic procedure, GENERAL NURSING R...

GENERAL NURSING RESPONSIBILITIES IN DIAGNOSTIC PROCEDURE Let us understand what are the general responsibilities of nursing personnel while assisting in diagnostic procedure

Ribosomes, Ribosomes - It is also known as Protein factory, Engine ...

Ribosomes - It is also known as Protein factory, Engine of the cell. Ribosomes are smallest cell organelles (150 x 250 Å). Unit membrane less cell organelle. Ribo

Patient care plan for hypertensives, Q. Patient care plan for hypertensives...

Q. Patient care plan for hypertensives? - Lifestyle changes: Avoiding smoking, use of tobacco, and excess alcohol intake Physical activity like walking, 4 times a week or 40 mi

Explain the infarct exclusive technique, Explain the Infarct Exclusive Tech...

Explain the Infarct Exclusive Technique? Infarct Exclusive Technique :  Left ventriculotomy is done through the infarcted area. No attempt is made to close the ventricu

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