Organism to present a large intestinal surface, Biology

Assignment Help:

Q. After digestion the next step is absorption done by cells of the mucous membrane of the intestine. For this task a large absorption surface is an advantage. How is it possible in the small internal space of the body of a pluricellular organism to present a large intestinal surface?

Evolution tried to solve this problem in two ways the simplest is the tubular and long shape of the bowels approximately eight meters in extension making possible that numerous small intestine loops fold closely. More effective solutions are the microvilli and the intestinal villi of the mucosal membrane cells.

The intestinal wall isn't smooth. The mucous membrane together with its submucosa projects inside the gut lumen like glove fingers forming invaginations and villi that multiply the available surface for absorption in addition the epithelial cells that cover these villi have themselves numerous hairlike projections called as microvilli on the external face (lumen face) of their plasma membrane. The absorptive area of the intestines is thus improve hundreds of times with these solutions.

In the ileum and jejunum there are folds that have the function of increasing the absorption surface too.


Related Discussions:- Organism to present a large intestinal surface

How potassium dichromate dissolved in water, How would you prepare 90 ml of...

How would you prepare 90 ml of .01 M potassium dichromate dissolved in water? Molecular mass of potassium dichromate is 294 g/mol.

Define arthropod by basic morphology - germ layers, Q. Arthropod identity c...

Q. Arthropod identity card. How are arthropods characterized according to examples of representing beings, basic morphology, type of symmetry, germ layers and coelom, digestive sys

Explain about the demand curve or schedule in short, Explain about the Dema...

Explain about the Demand curve or schedule in short. The demand curve or demand schedule shows the total quantity purchased through all buyers, within aggregate, into the marke

Determine the term - angiomas, Determine the term - Angiomas Angiomas a...

Determine the term - Angiomas Angiomas are congenital collections of abnormal vessels that divert the normal flow of blood. These capillaries, venous, or arteriovenous (A-V) ma

Protein requirement during congestive cardiac failure, Q. Protein Requireme...

Q. Protein Requirement during congestive cardiac failure? Protein: The protein requirements remain the &me as healthy adult men and women, About 0.8 - lg of protein per kg

Difficulty of establishing collaborations - infuse biology, Explain the Dif...

Explain the Difficulty of establishing and sustaining collaborations? Working with another is both rewarding and challenging. Working across disciplines is even more so. Though

Define apoptosis, Question Write a short note on the following- 1 Ph...

Question Write a short note on the following- 1 Phases of fertilization 2 Blastulation 3 Germ layer derivatives 4 Gap genes 5 Discuss any 5 potentials and limita

State the term - localisation scales, State the term - localisation scales ...

State the term - localisation scales The localisation scales are also empirically derived, being based on studies of patients with localised brain lesions. There are frontal,

How do foods and animals become contaminated with dioxin, Normal 0 ...

Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4

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