Explain the role of secretin, Science

Assignment Help:

Explain the Role of secretin

Secretin is a polypeptide containing 27 amino acids. It is present in the mucosa of the upper small intestine in an inactive form prosecretin. When food mixed with hydrochloric acid enters the duodenum, secretin is released from prosecretin. Secretin causes the pancreas to secrete large quantities of fluid containing a high concentration of bicarbonate ion. This copious flow of fluid is called hydrelatic secretion because it is mainly a thin watery solution containing almost no enzymes. Pancreatic juice containing large quantity of sodium bicarbonate is helpful to neutralize the acid content of substances emptied into the duodenum from the stomach. The reaction is as follows:

1105_Role of secretin.png

Carbonic acid dissociates into water and carbon dioxide. Carbon dioxide is absorbed into the body fluids. A neutral solution of sodium chloride is left. Bicarbonate secretion also provides an appropriate pH for the action of pancreatic enzymes.


Related Discussions:- Explain the role of secretin

What are the disadvantages of alkaline soils, What are the Disadvantages of...

What are the Disadvantages of Alkaline Soils As most of the plants can assimilate nitrogen in its nitrate form, and oxidation of ammonium fertilizer can take place only in acid

Explain the sexually transmitted infections, Explain the Sexually Transmitt...

Explain the Sexually Transmitted Infections These include, for example, chlamydial infection, gonorrhoea, trichomniasis, syphilis, chancroid, genital herpes, genital warts (ca

Precautions for fire prevention, PRECAUTIONS FOR FIRE PREVENTION : In the ...

PRECAUTIONS FOR FIRE PREVENTION : In the event of fire or explosion occurring there should be a prearranged plan of the necessary action to be taken. All personnel must be made aw

Define creatinine in urine, Define Creatinine in Urine Creatinine: It i...

Define Creatinine in Urine Creatinine: It is an end-product of protein metabolism, an anhydride of creatine, found in the blood and urine that can be used to help assess if the

Protozoan, what is the scientific classification of a protozoan

what is the scientific classification of a protozoan

Introduction to attending to emergency situations, INTRODUCTION : By doing...

INTRODUCTION : By doing this exercise, you will learn how to deal with emergency situations arising out of laboratory accidents. You are aware that a tense situation arises once a

Fire blankets-water extinguishers, Fire Blankets :  We have already discus...

Fire Blankets :  We have already discussed the use of fire blankets, but it is worth noting that fire blankets are now made of glass fibre instead of asbestos, and that they are u

Define the blood groups, Define the Blood Groups We start our discussi...

Define the Blood Groups We start our discussion by answering the question - do all of us have the same blood group? No, each individual has a different blood group. The differ

Matter., what is the concepts of matter#

what is the concepts of matter#

Explain age related changes - ageing, Explain Age Related Changes - Ageing ...

Explain Age Related Changes - Ageing Age related changes are mainly observed at a cellular level. The connective tissues throughout body show an increase in stiffness because o

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