Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Define Absorption, Storage and Elimination of Vitamin K?
Dietary vitamin K, mainly phylloquinone, is absorbed chemically unchanged from the proximal intestine after solubilization into mixed micelles composed of bile salts and the products of pancreatic lipolysis. In healthy adults, the efficiency of absorption of phylloquinone in its free form is about 80%. Within the intestinal mucosa, the vitamin is incorporated into chylomicrons, is secreted into the lymph, and enters the blood via the lacteals (minute intestinal lymph-carrying vessels). Once in the circulation, phylloquinone is rapidly cleared at a rate consistent with its continuing association with chylomicrons and the chylornicron remnants, which are produced by lipoprotein lipase hydrolysis at the surface of capillary endothelial cells. Although phylloquinone is the major circulating form of vitamin K, MK-7 is also present in plasma, at lower concentrations and with a lipoprotein distribution similar to phylloquinone.
Vitamin K is stored in the liver - the site of synthesis of coagulation proteins -and of 90 percent menaquinones. Phylloquiucnes and menaquinones are also extra hepatic tissues. Phylloquinone levels are high in liver, heart and pancreas. Vitamin K is extensively metabolized in the liver and excreted in the urine and bile. About 60-70% of the amount of' phylloquinone absorbed from each meal will ultimately be lost to the body by excretion. This, therefore, suggests that the body stores of phylloquinone are being constantly replenished.
Name the system that contains three neurons Consider a system that contains three neurons in a culture dish bathed in normal physiological saline. All three neurons are health
Q. Definition of Osseointegration From the view of the patient? An implant fixture is osseointegrated if it provides a stable and apparently immobile support of a prosthesis un
Organisms are made to compete for their needs from the environment. The competition as we pointed earlier could be for the food and territory, to overcome the adverse climatic cond
FUNDAMENTAL CHARACTERS OF EMBRYONIC DEVELOPMENT 1 . GAMETOGENESIS- Testes & ovaries are collectively called as gonads. Similarly sperms & ova are collectively calle
Oseltamivir (Tamiflu) This oral neuraminidase inhibitor, started within 36 hours of symptom onset, can decrease the severity and duration of symptoms caused by either influ
Amylase The presence of pancreatic amylase brings about the breakdown of starch and glycogen and its action is similar to salivary amylase. The hydrolysis of starch and gl
Non-viral vectors Viral vectors are highly efficient but when it comes to large scale production at the commercial level, non-viral serve as a better choice. These methods p
Define the Reaction to Food Additives? Food additives such as preservatives, flavour enhancers and colouring agents have been linked to adverse food reactions. Additives implic
Explain Class Oligochaeta - Earthworms in details? This group of annelids includes the earthworms. Oligochaetes live in the soil or in fresh water habitats, and a few inhabit m
main branches of biology
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd