Determine the fate of manganese which is absorbed, Biology

Assignment Help:

Determine the fate of manganese which is absorbed?

Let us now study the fate of Mn which is absorbed.

After absorption, Mn is complexed with albumin and transported to the liver, which is the key organ in its metabolism. In the liver, Mn is found in both rapid and slow exchanging pools. The former is the precursor of biliary Mn, which is excreted in the faeces. The latter serves as the source of Mn for the liver and extra hepatic tissues. Mn becomes bound as Mn2 + to a-macroglobulin before traversing the liver. From the liver, some Mn2+ appears to be oxidized by ceruloplasmin to Mn3+ and complexes with transfenin. Transferrin bound Mn3+ is taken up by the extrahepatic tissues. Mn is found in most organs and tissues and preferentially accumulates in the mitochondria. There is no storage form for Mn. Bone contains substantial amount of mineral but there is no mechanism to release it and thus bone Mn is considered as passive storage. It is released only as a result of normal bone turnover or in situations of accelerating bone resorption. Mn is almost totally excreted in the faeces (92%). Excess absorbed MI is quickly excreted by the liver into the bile to maintain homeostasis. Only trace amounts are excreted in urine.

 


Related Discussions:- Determine the fate of manganese which is absorbed

When aflatoxigenic molds can occur, Q. When Aflatoxigenic molds can occur? ...

Q. When Aflatoxigenic molds can occur? Occurrence: Aflatoxigenic molds can occur in warmer parts of the world and aflatoxicosis maybe produced in a wide range of tropical and s

Name the interstitial spaces of the kidney medulla, Select the processes as...

Select the processes assist in the maintenance of high levels of dissolved solutes in the interstitial spaces of the kidney medulla? A. Net flux of sodium ions from intracellul

Tissue, how does the structure of epithelial tissue allows it to fulfil its...

how does the structure of epithelial tissue allows it to fulfil its function

Ecology, Explain how human activities can cause an imbalance in biogeochemi...

Explain how human activities can cause an imbalance in biogeochemical cycling and lead to problems such as cultural eutrophication and fish kills.

Explain about the essential fat in humans, Explain about the essential fat ...

Explain about the essential fat in Humans? For the body to function normally, certain amount of body fat is required. This is called essential fat. For women, average amount of

Rhinosporidiosis (fungal-like agent), Rhinosporidiosis (Fungal-like agent) ...

Rhinosporidiosis (Fungal-like agent) Rhinosporidiosis is a chronic, non-fatal, granulomatous mycotic infection of nasal mucosa caused by Rhinosporidium seberi. R. seberi is curren

How is hiv transmitted, How is HIV transmitted? What is the disease caused ...

How is HIV transmitted? What is the disease caused by this virus? HIV (human immunodeficiency virus) is supposed to be transmitted by blood, semen, maternal milk and vaginal se

Defective extra-preputial protrusion of the penis, Defective extra-preputia...

Defective extra-preputial protrusion of the penis This defect is a result of hypoplasia or a defective penile erection due to a congenital mucosal fold – the frenulum - betwee

Types of muscular tissue, TYPE S -   There are present three types ...

TYPE S -   There are present three types of muscle fibres:   1.      Striped or striated or skeletal or voluntary muscles.   2.      Unstriped or non-striated o

Why that property of water is important to life, Choose one property of wat...

Choose one property of water and explain why that property is important to life.

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