Types of osmotic exchanges, Biology

Types of Osmotic Exchanges

The osmotic exchanges that take place between an animal and its environment are of two different types:

  • Obligatory exchanges and
  • Regulated exchanges

 

In obligatory exchange osmotic exchanges occur mainly in response to physical factors over which the animal has little or no physiological control. Whereas in regulated exchanges, the osmotic exchanges are physiologically controlled and it serve to aid in maintaining internal homeostasis. Regulated exchanges generally serve to Animals that maintain osmolarity of their body fluids constant irrespective of the medium in which they live are termed osmoregulators.

Animals that do not actively control the osmotic condition of their body fluids and instead conform to the osmolarity of the medium in which they live are termed osmoconformers. Most vertebrates, except elasmobranches and hagfishes are strict osmoregulators, maintaining the composition of body fluids within small osmotic range. Marine invertebrates are in osmotic balance with seawater. The concentration of Na+, K , ca2+, Mg2+ and Cl- in their body fluids is close to the concentration of these ions in the seawater, in which they live.

Posted Date: 1/16/2013 2:31:47 AM | Location : United States







Related Discussions:- Types of osmotic exchanges, Assignment Help, Ask Question on Types of osmotic exchanges, Get Answer, Expert's Help, Types of osmotic exchanges Discussions

Write discussion on Types of osmotic exchanges
Your posts are moderated
Related Questions
Q. In which period of meiosis does the pairing of homologous chromosomes occur? The pairing of homologous chromosomes is a very important step for meiosis because the rightness

According to the theory of natural selection, what factor below contributed to the current variations in beak sizes of finch species on the Galapagos Islands? a. Finches dispersed

Why are vaccines used in the prevention but not in the treatment of infections? Why can antivenom serums be used in prevention and treatment? Vaccines are not used in the treat

Question 1 Discuss briefly the collection and examination of pericardial fluid Question 2 Discuss the following- A) Collection of CSF B) Physical examination o

Define effect on Oestrogens and progesterone in pregnancy? Oestrogens and progesterone are secreted by the placenta from 8-10 weeks of gestation. Progesterone increases through

Q. Concerning solubility, how are the lipids classified? Oils and Fats are hydrophobic molecules, i.e., they are insoluble in water and non polar. Lipids in general are molecul

Q. What are the different radiographic techniques used for assessing osseointegration? The different radiographic techniques used to assess osseointegration prior to stage 2 su

what are the unique characteristics of a flatworm

Q. What is the anemia? What are the four major types of anemia? Anemia is low concentration of hemoglobin in the blood, the four major kind of anemia are the nutrient-deficienc

Determine the importance of Behavioural observations Behavioural observations are often noteworthy to the extent that they involve alterations in the examiner's usual response