MEDI213 Lecture 9: Calcium, magnesium, phosphorous
7 Aug 2018
School
Department
Course
Professor
Document Summary
Discuss the absorptive process and functions of calcium, phosphorus, magnesium, sulphur, copper, zinc & iodine. Describe daily requirements and food sources of calcium, phosphorus, magnesium, sulphur, copper, zinc & iodine. Describe the importance of calcium, phosphorous & calcium in relation to bone health. Individual physiological need (e. g. iron anaemia (become better at absorbing), zinc same: bioavailability (e. g. non heme iron + vit c increases, gastric acidity. Bioavailability: degree to which the amount of an ingested nutrient is absorbed and is. Functions: water balance, growth and development, nervous system, cellular processes, metabolism, cofactors. Increased bone resorption: when blood calcium is high, calcitonin released from thyroid, decreased calcium retention (at kidneys, decreased intestinal absorption, decreased bone resorption (absorbed?, food sources, but bioavailability of calcium from selected foods, toxicity. Increased risk of kidney stones: excessive supplementation and hyperparathyroidism can lead to high blood levels (hypercalcaemia) and calcification of kidneys.
