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

Explain cardiac calcification, Q. Explain Cardiac calcification? Peric...

Q. Explain Cardiac calcification? Pericardial Calcium is most dense in the atrioventricular grooves and is seen as thick oblique circles or arcs of calcification. From th

Food chain and types of food chain, In an ecosystem various trophic levels ...

In an ecosystem various trophic levels are interlinked with each through a food chain. ( the transfer of food energy from green plants through a series of organism with repeated ea

Explain the acquired deficiency of the vitamin k metabolism, Why are some t...

Why are some types of hemorrhagic diseases caused by genetic or acquired deficiency of the vitamin K metabolism? Lack of vitamin K predisposes to hemorrhages as this vitamin i

What is mineral absorption, Define Mineral Absorption? NDOs affect main...

Define Mineral Absorption? NDOs affect mainly calcium/magnesium absorption and balance. Acidification of colonic contents increases the concentration of ionized minerals, parti

How can we assess the nutritional status of a chd infant, How can we assess...

How can we assess the nutritional status of a CHD infant? Various assessment methods can be used, particularly anthropometrical -weight, length (height), head circumference and

Structure of the vascular system, Structure of the Vascular System Th...

Structure of the Vascular System The layers of the vascular system are all similar in veins and ateries. The difference of thickness of various layers constitute the functio

What are the factors to an actual shift in the supply curve, What are the f...

What are the factors to an actual shift in the supply curve? Factors which cause an actual shift in the supply curve are described in below: When prices rise or fall this wo

What do you understand by term - acanthus, What do you understand by term -...

What do you understand by term - acanthus The egg and larval phase of an acanthocephalan which passes from the female parasite to the feces of host.

Rigs pattern - types of nursing units, Rigs Pattern: The nursing unit ...

Rigs Pattern: The nursing unit has been divided into small cubicles for 1,2,4  and 6 beds.  The beds are arranged parallel to the  longitudinal wall.  The pattern was first bu

Explain the functionality of central nervous system, Explain the functional...

Explain the functionality of Central Nervous System ? The central nervous system is the center of the nervous system, receiving impulses from, and sending impulses to, the per

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