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

Metanephridia - excretion, Normal 0 false false false E...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Describe the term intellectual property rights, Question 1: Describe th...

Question 1: Describe the term Intellectual Property Rights. Show the difference between Patents, industrial designs, and trademarks. Define the term Intellectual Property

How natural colourants produced, Natural Colors Used In Foods Natural c...

Natural Colors Used In Foods Natural colourants produced for use in an analogous way to the coal-tar dyes are crude extracts of pigments, which are basically unstable. The appa

Blood transfusion , Blood transfusion  The blood of Raja cannot be t...

Blood transfusion  The blood of Raja cannot be transfused to Rama because the blood group of Raja is ‘B' and blood group of Rama is ‘A'. If Raja's blood with group ‘B' is

Ice age, Ice age is an interval of geologic time between 2 million and 10,...

Ice age is an interval of geologic time between 2 million and 10,000 years ago during that period the northern hemisphere experienced several episodes of continental glacial advan

What are the digestive functions of the liver, What are the digestive funct...

What are the digestive functions of the liver? Besides making bile for release in the duodenum, the liver has other digestive functions. The venous network that absorbs nutr

Why epiphyseal closure differs between males and females, It is said during...

It is said during puberty rising sex hormones stimulate osteoblasts to produce bone faster than the rate at which epiphyseal cartilage expands. The timing of epiphyseal closure dif

What are the advantages of the closed circulatory system, What are the adva...

What are the advantages of the closed circulatory system over the open circulatory system? The closed circulatory system is more efficient. As blood circulates only inside bloo

One benefit of including vegetable fibre in the diet, State one benefit of ...

State one benefit of including vegetable fibre (roughage) in the diet   Vegetable fibre retains water (keeping the faeces soft and bulky), stops constipation, decreases the

Define hexose monophosphate pathway, Define hexose monophosphate pathway ...

Define hexose monophosphate pathway The hexose monophosphate pathway (HMP also called the pentose phosphate pathway, or phoshogluconate pathway) consists of Mo irreversible 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