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

What are the maximum crop yields, What are the Maximum Crop Yields   Mi...

What are the Maximum Crop Yields   Mitscherlich conducted a large number of experiments with different plants, making use of pots 20 cm in diameter and 20 cm in depth. By addin

Define interaction of vitamin c with riboflavin, Define interaction of Vita...

Define interaction of Vitamin C with Riboflavin? The two coenzyme forms of riboflavin are FMN and FAD. They are found in a large number of systems which function in the metabol

Heart, about of moving blood

about of moving blood

What are nymph and imago, What are nymph and imago? Nymphs are larvae o...

What are nymph and imago? Nymphs are larvae of hemimetabolic insects (like grasshoppers). They are very same to the adult insect although smaller. In holometabolic insects (lik

Carbohydrate requirement during congestive cardiac failure, Q. Carbohydrate...

Q. Carbohydrate requirement during congestive cardiac failure? While the quantity of carbohydrate remains almost the same as per the RDI i. e, 60% of the total energy, the qual

Abandonment of the ammoniotelic excretion, Q Why after the passage of anima...

Q Why after the passage of animals from the aquatic to the terrestrial habitat does the abandonment of the ammoniotelic excretion occur? Ammonia is a highly toxic molecule if n

Homework, The Waldorf family was caught in a fire but escaped. Unfortunatel...

The Waldorf family was caught in a fire but escaped. Unfortunately, the father and daughter suffered burns. The father had second-degree burns on his entire chest, abdomen, and bot

Explain wild-type fruitfly drosophila melanogaster, A cross among wild-type...

A cross among wild-type fruitfly Drosophila melanogaster  [normal bristles and grey body (s+s, e+ e)] with a mutant fly [short bristles and ebony body (ss ee)] produces following p

Explain about the water-soluble vitamin - riboflavin, Explain about the w...

Explain about the water-soluble vitamin - Riboflavin? Riboflavin (vitamin B 2 ), a water-soluble vitamin, was discovered in milk as a pigment possessing a yellow green fluore

Cardiac doppler, Doppler echocardiojgraphy measures blood  flow velocities ...

Doppler echocardiojgraphy measures blood  flow velocities  and direction of blood flow  in the heart add great vessels. The characteristics of blood flow are evaluated using both a

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