Define absorption, transport and excretion - calcium, Biology

Assignment Help:

Define Absorption, Transport and Excretion - Calcium?

Calcium (Ca) in food occurs as calcium salts e.g. calcium phosphate or is associated with other dietary constituents e.g. calcium caseinate in milk. Before absorption, Ca must be released from foods and solubilized. This is achieved by the combined actions of gastric acid, intestinal enzymes, intestinal contractions and peristalsis. When calcium intake is low, calcium is mainly absorbed by active (transcellular) transport, but at higher intakes, an increasing proportion of calcium is absorbed by simple (paracellular) diffusion. Thus, calcium is absorbed from the intestine by transcellular route and paracellular route.


Related Discussions:- Define absorption, transport and excretion - calcium

Describe the uses of pupil, Describe the uses of pupil Variation in the...

Describe the uses of pupil Variation in the size, shape or reaction usually indicates some form of disease, disorder or use of medication. The pupil is usually dilated by the u

How much fat contain vegetable butters, Vegetable Butters  Fats of thi...

Vegetable Butters  Fats of this group are derived from the seeds of various tropical trees and are distinguished by their narrow melting range, which is due mainly to the arra

Nursing care and treatment for cleft palate, Nursing Care and Treatment  ...

Nursing Care and Treatment   The only treatment is surgical repair and child may be operated before 18 months as per the choice of surgeon so  that speech pattern of child may

Define the enzyme function of vitamin c, Define the Enzyme Function of Vita...

Define the Enzyme Function of Vitamin C? Vitamin C acts as an electron donor for 11 enzymes. Three of those enzymes are found in fungi but not in humans. Of the eight remainin

Bovine parainfluenza, B ovine parainfluenza This virus belongs to the ...

B ovine parainfluenza This virus belongs to the genus Respirovirus in the subfamily Paramyxovirinae of family Paramyxoviridae. It causes respiratory syndrome in cattle and she

Explain about the whey protein concentrates, Explain about the Whey Protein...

Explain about the Whey Protein Concentrates? You already know that whey is the residual liquid substance that is obtained by separating the coagulum from milk during cheesemaki

Main factors for the growth of a population, Q. What are the main limiting ...

Q. What are the main limiting factors for the growth of a population? The factors that bound the growth of a population can be divided into abiotic factors and biotic factors.

Illustrate about insulin devices - insulin pen, Insulin Devices - Insulin P...

Insulin Devices - Insulin Pen Insulin pen is an insulin injection system. A pen consists of disposable needle, a vial of insulin and a pen. There are two pen systems replac

How do ascaris obtain food, Q. How do ascaris obtain food? An ascaris l...

Q. How do ascaris obtain food? An ascaris live within the human gut and feed from the food ingested by the infected person.

What do you mean by alpha taxonomy, Q. What do you mean by Alpha Taxonomy? ...

Q. What do you mean by Alpha Taxonomy? This relates to the basic or preliminary classification based almost entirely on external morphology. This can be considered as the empir

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