Gills - respiration, Biology

Assignment Help:

Gills -Respiration

Gills are highly vascularised extensions of gas exchange membranes. The simple type may be extension of the body surface as in sea-slugs, sea stars and many of slow moving aquatic animals. The complexity of the gills reflects the animal's requirement for oxygen. Animals with greater need or oxygen have elaborate gill structure. Before we discuss the structure of the gill let us consider the ways in which gills are ventilated because the environment in contact with respiratory surface must be continuously renewed to avoid depletion of oxygen or excessive accumulation of carbon dioxide.

 


Related Discussions:- Gills - respiration

Express the term in brief protonephridia., Express the term in brief - Prot...

Express the term in brief - Protonephridia. An osmoregulatory-excretory structure found in some invertebrates. Also known as a flamecell, this tubule is closed at its distal en

Nutrient cycling in tropical and temperate forests , Nutrient Cycling in Tr...

Nutrient Cycling in Tropical and Temperate Forests From this study of the nutrient cycles you must have realised the importance of the role of green plants that take up nutri

Inversion, Inversion We know that atmosphere is heated from below and w...

Inversion We know that atmosphere is heated from below and warm air rises, but air can be prevented from rising by a condition known as inversion. An inversion refers to a situ

State the exocytosis in a skeletal muscle, Exocytosis in a skeletal muscle?...

Exocytosis in a skeletal muscle?   A.  During exocytosis in a skeletal muscle, there will be release of calcium ions from intracellular vesicles in the sarcoplasmic reticulum i

Explain transposition with vsd and pulmonary stenosis, Explain Transpositio...

Explain Transposition with VSD and Pulmonary Stenosis ? In the early years Rastelli and le Compte operations had 20 to 30 per cent mortality. This has been reduced to 5 per c

How can we control the disease cholera, How can we control the disease Chol...

How can we control the disease Cholera Control: Individuals infected  with cholera require oral rehydration therapy  with NaCl plus sucrose, sodium bicarbonate and potassium ch

Interdependance, Give an example of how two organisms are interdependent.

Give an example of how two organisms are interdependent.

How are amphibians characterized, Q. Amphibian identity card. How are amphi...

Q. Amphibian identity card. How are amphibians characterized according to examples of representing beings, basic morphology, circulation, skin, nitrogen waste, respiration, thermal

Explain the neuritic type of infantile beriberi, Explain the neuritic type ...

Explain the neuritic type of infantile beriberi? It is also referred to as Wernicke korsakoff syndrome or cerebral beriberi. It shows typical manifestations of peripheral neuro

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