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Explain about the Oral cavity and alimental-y tract?
Various functional changes and decline in secretary function occur in the digestive tract with aging. These include:
Oral cavity - The dentition are affected, (loosening of teeth, tooth decay and gum deterioration with age), saliva secretion decreases leading to dry mouth (xerostomia).
Gastric - Reduced gastric secretion and gastric emptying is common in elderly. Some authors consider it to be due to aging whereas other investigators consider it to be due to helicobacter pylori. This affects the iron availability from the diet. Vitamin B,, deficiency also observed due to decreased gastric intrinsic factor. Due to the reduction in intestinal colon motility and poor muscle tone of abdomen along with decrease in dietary fiber intake and low physical activity associated with aging, constipation is a common problem observed.
Define volumetric flasks - Nutritional Biochemistry A volumetric flask is used to make up a solution of fixed volume very accurately. It is calibrated to contain a particular v
What are cytokinins? Where are they made? Cytokinins are phytohormones active in the promotion of cellular division; they slow down the aging of tissues and act together with a
How is the genetic determination of sex established in humans? In the diploid genome of human beings there are 46 chromosomes, 44 of them are autosomes and two are sex chromoso
Explain the Female Reproductive System? The female reproductive system consists of the primary sex organs, the ovaries, and the accessory organs necessary to effect fertilizati
Collection of Cerebro-spinal Fluid (CSF) Examination of the CSF is one of the most useful laboratory procedures in neurological diagnosis. Four types of punctures ma
LIVE R - The liver produces a protein angiotensinogen which is changed to angiotensin II by an enzyme renin secreted by the juxtaglomemlar apparatus of the nephrons in the kid
Organisation of the Marine Ecosystem The oceans like lakes, exhibit zonations. First describe the various zones or regions of the oceans and then later deal with the biota occ
Hom o sapiens neanderthalensis (NEANDERTHA L MAN) - Fossil discovered by C. Fuhlrott (1856) from Neander htat valley of Germany. This resembled modem man, cran
Define about the Centrifuge? Centrifuge is an apparatus consisting essentially of a compartment spun about a central axis to separate contained materials of different specific
(a) Trace the succession of plants on a dry bare rock. (b) How does phosphorus cycle vary from carbon cycle?
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