Actions of gastrointestinal hormones, Biology

Assignment Help:

Actions of Gastrointestinal hormones

Secretin is released under acidic conditions (low pH); digested fat or bile initiates production of pancreatic juice low in enzymes but rich in salts important in neutralising the acid chyme. CCK is secreted when partially digested proteins or HCl (to a lesser extent) are present. It induces the flow of pancreatic juice rich in enzyme. Figure summaries the action of GI hormones.

1197_Actions of Gastrointestinal hormones.png

Figure: Action of several gastrointestinal hormones. Gastrin is secreted in response to intragastric proteins, stomach distention and stimulation by vagus nerve. Gastrin from the lower stomach stimulates HCI secretion and pepsin from secretory cells. Cholecystokinin (CCK) stimulates pancreas to secrete digestive enzymes and bases to neutralise and digest chyme. It also induces contraction of gall bladder to secrete bile salts. CCK is secreted in response to arrival of amino acids and fatty acids in deodenum from stomach.

These two hormones inhibit stomach motility. Arrival of fat from the stomach initiates the release of CCK by intestinal mucosa, this causes gall bladder to release bile which aids in fat digestion.


Related Discussions:- Actions of gastrointestinal hormones

How is the blood typing concerning the abo system, How is the blood typing ...

How is the blood typing concerning the ABO system and the Rh usually done? In the blood typing for the ABO system and the Rh system a blood sample is collected from the person

What is dinoflagellates, What is Dinoflagellates ? Dinoflagellata or...

What is Dinoflagellates ? Dinoflagellata or dinoflagellates , are characteristically unicellular photosynthetic organisms that usually have two flagellae. One flagellum typi

Homeopathic cures, If water dousing, homeopathic cures, and so on work for ...

If water dousing, homeopathic cures, and so on work for just me but not for anyone else, it is still science.

Sulphur (s) - macronutrients, Sulphur (S) - Macronutrients Sulphur is ...

Sulphur (S) - Macronutrients Sulphur is present in the soil in inorganic and organic forms. In most soils organically bounds is the major S reservoir. The inorganic forms of S

#title, IN WHAT ASPECT ARE CNIDARIANS SIMILAR TO PROTOZOANS

IN WHAT ASPECT ARE CNIDARIANS SIMILAR TO PROTOZOANS

Explain catastrophism, Catastrophism Once-popular belief which events in t...

Catastrophism Once-popular belief which events in the history of earth had occurred in the past a sudden events and by processes different from those operating today. The periods

State the term autopsy data - brain patient, State the term Autopsy data - ...

State the term Autopsy data - Brain patient Autopsy data are not always entirely usable for validation purposes, in that numerous changes may have taken place in the patient's

Define reaction for nelson-somogyi method, Define Reaction for Nelson-Somog...

Define Reaction for Nelson-Somogyi Method? The reagent used for enolization contains alkaline solution of cupric sulfate and Rochelle salt. Rochelle salt in the reagent prevent

Can you explain the anoxia, Q. What is the anoxia? Anoxia is a situatio...

Q. What is the anoxia? Anoxia is a situation in which there is no available oxygen in the cell without oxygen the respiratory chain stops there is no ATP production the cell do

Hyperlipidemia, Dyslipidemia is an important correctable factor for Coronar...

Dyslipidemia is an important correctable factor for Coronary Artery Disease. There is a strong, independent, continuous, and graded relation between total cholesterol (TC) or low-

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