Explain about the intestinal calcium absorption, Biology

Assignment Help:

Explain about the Intestinal calcium absorption?

Intestinal calcium absorption is mainly controlled by the serum concentration of 1, 25- (OH)2D as discussed above. The activity of the 1-α-hydroxylase, which catalyzes 1, 25-(OH)2D production from 25-hydroxyvitanlin D (25-OH-D) in the kidneys, is negatively related to plasma calcium and phosphate concentrations and positively related to plasma parathyroid hormone concentrations. Thus, the inverse relationship between calcium intake and fractional absorption described above is enhanced by the inverse relationship between dietary calcium and serum 1, 25-(OH)2D. We will learn about this aspect later in this section under the heading regulation of Ca concentration.


Related Discussions:- Explain about the intestinal calcium absorption

What are the main divisions and representing species, What are the main div...

What are the main divisions and representing species of the gymnosperms? This group of plants can be divided into conifers (pine, sequoia, cypress), that have flowers known as

Meiosis, A fruit fly has four pairs of chromosomes in its cells. At meiosis...

A fruit fly has four pairs of chromosomes in its cells. At meiosis, how many different combinations of maternal and paternal chromosomes are possible in the gametes?

Risk factors for gdm, Q. Risk Factors for GDM? If any of the following ...

Q. Risk Factors for GDM? If any of the following risk factors are present in a woman, she may develop GDM: 1) Presence of obesity. 2) If any family members (parents, brot

What are the two major morphological patterns of cnidarians, Q. What are th...

Q. What are the two major morphological patterns of cnidarians? Concerning locomotion how do these forms differentiate from each other? Morphologically, cnidarians classify as

Mechanisms of neural plate formation, Mechanisms of Neural Plate Formation ...

Mechanisms of Neural Plate Formation You are familiar with the concept that the neurulation comprises of two processes i) The neural plate formation and ii) The neural t

Define cell plate, Cell plate:  In the plants, a membrane-bound space produ...

Cell plate:  In the plants, a membrane-bound space produced during the process of cytokinesis by the vesicles of the Golgi apparatus. The cell plate fuses with plasma membrane, sep

What do you mean by connective tissue proper, Q. What is connective tissue ...

Q. What is connective tissue proper? The name connective tissue proper is used to designate the connective tissue that fills interstitial spaces as opposed to the specialized c

Tropical savannas, Leaving the deserts as you approach the tropical regions...

Leaving the deserts as you approach the tropical regions of the earth you will enter the savanna biome, which is a combination of grassland with scattered or clumped trees. These s

Male gamete and the female gamete in a flowering plant, What is (a) the mal...

What is (a) the male gamete, and (b) the female gamete in a flowering plant?   (a) The male gamete in a flowering plant is the pollen grain (strictly, the gamete is the male

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