Define fraction in which calcium in plasma is present, Biology

Assignment Help:

Define Fraction in which Calcium in plasma is Present?

Calcium in plasma is present in three major fractions:

  • Ionized calcium
  • Protein bound calcium
  • Complexed calcium

The ionized calcium that constitutes 50% of the total plasma calcium is the only biologically active fraction. Of the remaining half 40% of the plasma calcium is protein bound, 80% being bound to albumin and 20% to globulin. Although the protein bound calcium, does not participate in the biological actions, it serves as a ready reservoir of ionized calcium. When plasma calcium levels fall, the first line of defense against hypocalcemia is the dissociation of the calcium from the protein complexes to make the cation Ca++ available.

About 8% of plasma calcium is present as complexes with organic phosphate. This has little importance as a reservoir of ionized calcium. The regulation of plasma calcium is finely controlled by three sets of hormones and these are crucial for maintaining plasma level constant in the long term. The normal range for total serum calcium is very narrow i.e. 2.0-2.5 millimoles per litre (9-10 mg/dl) when plasma protein concentrate are normal, total plasma calcium less than 2.2 millimoles/litre reflects hypercalcemia. Let us read a little further about the regulation of extra and intracellular levels of calcium. We will first talk about plasma calcium concentration.

 


Related Discussions:- Define fraction in which calcium in plasma is present

Transport of macromolecules, Nuclear transport is an energy-dependent proce...

Nuclear transport is an energy-dependent process mediated through saturable receptors. Export and Import receptors are by to distinguish and bind to nuclear localization signals or

Enumerate the term - pathognomic sign, Enumerate the term - pathognomic sig...

Enumerate the term - pathognomic sign A comprehensive assessment ideally uses all four approaches. Some forms of specialised assessment rely heavily on pathognomic signs, behav

Importance of compliance, It is important to explain to the patient about i...

It is important to explain to the patient about importance of taking treatment regularly. In case he misses the dose or takes medicine or insulin irregularly, explain the side effe

Explain the structure of fungi, Explain the Structure of Fungi? The veg...

Explain the Structure of Fungi? The vegetative structure of a fungus is called thallus. It varies in complexity and size, ranging from unicellular yeasts to multicellular mould

Define requirements of iodine during pregnancy period, Define requirements ...

Define requirements of Iodine during pregnancy period? You would be already aware that maternal iodine deficiency leads to cretinism in the off spring. Hence, the material diet

Yersinia enterocolitica, Yersinia enterocolitica The genus Yersinia con...

Yersinia enterocolitica The genus Yersinia contains of 3 human pathogenic species, Y. enterocolitica, Y. pseudotuberculosis and Y. pestis, among which, Y. enterocolitica finds

Coadapted communities, From your studies in ecology, you must be aware that...

From your studies in ecology, you must be aware that most ecosystems are quite complex consisting of several habitats and that habitats in turn are composed of microhabitats. Each

Safety aspects of feed processing, Safety aspects of feed processing S...

Safety aspects of feed processing Safety of the man and machine in a feed mill is very important to avoid the accidents. Some basic aspects of a good safety programme are as f

Features of plant hormones, Features of Plant Hormones The following a...

Features of Plant Hormones The following are the important features of the role of plant hormones in growth and development: The hormone may initiate one response

Describe class holothuroidea in details, Describe Class Holothuroidea in de...

Describe Class Holothuroidea in details? Members of this Class resemble soft and squishy cucumbers lying on their sides on the bottom of the sea. On first glance, they appear n

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