Respiratory system in fishes, Biology

Assignment Help:

The fishes belong to class Pisces under vertebrates.
2. In fishes, the respiratory system consists of mouth, pharynx, internal branchial apertures, branchial pouches and external branchial apertures.
3. The branchial (gill) pouches are covered by mucous membrane which is thrown into folds called branchial (gill) lamellae.
4. Fish keep its mouth open and lower the floor of the oral cavity. Then the water (with dissolved oxygen) enters oral cavity.
5. While the mouth is closed, the floor of oral cavity is raised and the water from oral cavity flows into pharynx then into internal branchial apertures.
6. The gill lamellae are now bathed with water and gaseous exchange takes place.
7. Oxygen diffuses from water into the blood and 2 CO diffuses out from the blood into the water.
8. Then the water flows out through external branchial apertures.
9. The continuous opening and closing of mouth by a fish in water is to draw water into the oral cavity.

255_Respiratory system in fishes.png


Related Discussions:- Respiratory system in fishes

Determine the transplantation of mitochondria, Based on your reading of the...

Based on your reading of the article "Hello Mothers, Hello Father" which of the following is a correct statement regarding the transplantation of mitochondria? A. The sperm cel

Define atherosclerosis, Q. Explain Atherosclerosis? Atherosclerosis is ...

Q. Explain Atherosclerosis? Atherosclerosis is one of the most important causes of morbidity and mortality in developed as well as in developing countries. Atherogenesis occurs

Osmosis, everything about osmosis

everything about osmosis

What is the tympanum, What is the tympanum? In which part of the ear is it ...

What is the tympanum? In which part of the ear is it located and what is its function? The tympanum (or ear drum) is a membrane located in the middle ear just after the auditor

Archaeological records of human campsites, Archaeological Records of Human ...

Archaeological Records of Human Campsites Archaeological records of human campsites indicate that early humans started out as small bands of hunters who supplemented kills wit

Gas transportation systems in animals, Q. Oxygen comes from the environment...

Q. Oxygen comes from the environment and carbon dioxide in the end returns to the environment. How do small animals solve the problem of taking away and bringing these molecules fr

Systematics, binomial nomenclature is not applicable to

binomial nomenclature is not applicable to

List a few shortcomings of native starches, List a few shortcomings of nati...

List a few shortcomings of native starches which make it unacceptable in certain food applications. Lack of free-flowing properties of water repellence of the starch granules,

What is haccp control, HACCP Control :  a) To manage the conditions of an o...

HACCP Control :  a) To manage the conditions of an operation  to maintain compliance with established criteria. b)  The state where correct procedures are being followed  and  c

What are autotrophic beings? what are heterotrophic beings, What are autotr...

What are autotrophic beings? What are heterotrophic beings? The Autotrophic beings are those that can produce their own food that is that make organic material from inorganic c

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