Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
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.
Phylogenetic considerations
A cell frequently wants to secrete larger molecules than can be accommodated through the transport systems dealt with in Topic E3. Exocytoses get to the movement of proteins out of
Q. What are blood stem cells? Stem cells are undifferentiated cells able to differentiate into other kinds of specialized cells. The stem cells of the bone marrow originate
ARTERIAL SYSTEM OF MAMMAL Basic plan from origin to distribution is similar in all vertebrates as per the mode of respiration. Main anterior aorta in terrestrial forms ar
keel is the characteristic feature of flower of 1.tomato 2. tulip 3.ubdugifera 4.aloe
Q. Are there differences between the male and female skeletons? Many general differences exist between female and male skeletons. Male skeleton is normally larger and heavier t
how autophagy help in converting a tadpole larva into adult amphibian
Why is the number of bonds important in nucleic acids
Evolutionary Implications of Natural Regulation Many changes in abundance can be attributed to changes in extrinsic factors such as weather, disease or predation. But some cha
differences regarding Tiger Planaria and the Iridescent Phyllodoce
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd