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 about the Paracellular Route - Calcium?
It involves passive Ca transport through the tight junctions between mucosal cells. The salient features include:
Thus, we can say that most Ca absorption takes place in the small intestine. There is some evidence, which suggests that not more than 4% (8 mg) of dietary Ca is absorbed by the colon per day. The unabsorbed component which appears in the faeces together with the unabsorbed component of digestive juice calcium is known as endogenous faecal calcium. The faeces, therefore, contain unabsorbed dietary calcium and digestive juice calcium that was not reabsorbed. True absorbed calcium is the total amount of calcium absorbed from the calcium pool in the intestines and therefore contains both dietary and digestive juice components.
Net absorbed calcium is the difference between dietary calcium and, faecal calcium and is numerically the same as true absorbed calcium minus endogenous faecal calcium. At zero calcium intake, all the faecal calcium is endogenous and represents the digestive juice calcium which has not been reabsorbed; net absorbed calcium at this intake is therefore negative to the extent of about 200 mg (5 mmol). When the intake reaches about 200mg (5 mmol), dietary and faecal calcium becomes equal and net absorbed calcium is zero. As calcium intake increases, net absorbed calcium also increases, steeply at first but then, as the active transport becomes saturated, more slowly until the slope of absorbed or ingested calcium approaches linearity with an ultimate gradient of about 5 -10%. True absorption is an inverse function of calcium intake, falling from some 70 % at very low intakes to about 35% at high intakes. There are several factors which influence the amount of calcium absorbed through the intestine. These factors can thus be related to the bioavailability of calcium. The subsequent discussion will look at these factors in detail. But first we shall look at the excretion of unabsorbed calcium.
Read the information found in the Bioethics: Choices for the Future box on page 40 of the text entitled "Should you Bank your Stem Cells?" Based on the information given, discuss
what are the alpha taxonomy?
What is the meaning of Darwin's expression "descent with modification"? Descent with modification refers to natural selection. Descent with modification refers to evolutionary chan
Discuss blood types, the factors in crime scenes. What is a criminal case where blood samples were important in the case decision and outcome, what was it about the blood in this c
Define Interaction with carbohydrate, fats and proteins? Dietary carbohydrates, fats and proteins require water-soluble vitamins for their metabolism and in turn, influence the
Significance of Mitosis 1. Reproduction ; William Bateson 1906 wrote, Whenever I observe a dividing cell under the microscope , I feel as if the original act of c
Explain Neurologic disease For patients with facial nerve palsy alone, oral doxycycline or amoxicillin may be effective. Patients with other neurologic involvement, such as men
Give three reasons why energy transfer between trophic levels is not 100 percent. Some of the organisms in a trophic level escape being eaten; some energy is kept in molecules
how to make a membrane protein which in ER transfer to PM. whether can cut some amino of sequence which play as signal guide the protein to where could the problem
Tube or Enteral Feeding Ideally the patient must be fed orally, but in cases where the patient is unable to take solid foods, a part or all of intake is usually given by the tu
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