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The haemorrhagic disease of new born is caused due to the deficiency of
(d) The haemorrhagic disease of new born is caused due to the deficiency of vitamin-K, characterised by delayed blood clotting and haemorrhage (blood loss).
Calcium deficiency occurs in the absence of vitamin
(a) Vitamin-D (calciferol/antirachitic factor) mainly helps in Ca/P balance in the body fluids. It increases absorption of calcium from intestine so, it is necessary for formation of healthy bones and teeth Deficiency of vitamin-D causes increased loss of Ca+ in urine, so, no Ca- gets deposited in the bones. This cause rickets in children and in pregnant woman it causes osteomalacia.
Which part of body secretes the hormone secretin ?
(b) Secretin is a polypeptide hormone secreted by the mucosa of duodenum and jejunum.
It perform two functions:
(a) It stimulates sodium bicarbonate from the pancreas which neutralises the acid in the chyme so that it will not damage the wall of the small intestine.
(b) It increases the rate of bile secretion in the liver.
Secretin and cholecystokinin are digestive hormones. They are secreted in
(C) Secretin and cholecystokinin (CCK) are two main gastrointestinal (GI) hormones secreted in duodenum of alimentary canal. CCK stimulates gall bladder contraction and thus increases the flow of bile salts into the intestine. Secretin stimulates the release of an alkaline pancreatic fluid that neutralises stomach acid as it enters the intestine.
The vitamin-C or ascorbic acid prevents
(c) Vitamin-C or ascorbic acid prevents scurvy (failure to form connective tissue). Characterised by bleeding gums, anaemia, loose teeth, painful and swollen joints, delayed healing of wounds and emaciation.
Which group of three of the following five statements (A-E) contains all three correct statements regarding beri-beri ?
A-A crippling disease prevalent among the native population of sub-Sahara Africa
B- .A deficiency disease caused by lack of thiamine (vitamin-B,)
C .A nutritional disorder in infants and young children when the diet is persistently deficient in essential protein
D.Occurs in those countries where the staple diet is polished rice
E. The symptoms are pain from neuritis, paralysis, muscle wasting, progressive oedema, mental deterioration and finally heart failure
(d) The deficiency of vitamin-B, or thiamine is the disease beri-beri. This disease occurs in those
countries where the staple diet is polished rice. The symptoms of this disease are pain from neuritis,
paralysis, muscle wasting, progressive oedema, mental deterioration and finally heart failure.
Which of the following glandular secretions involved in digestion would be most likely released initially as inactive precursors ?
Proteolytic enzymes are strong enzymes and if released in activated form can damage the gland or its duct. Thus, they are commonly released as inactive precursors called zymogens such as trypsinogen and pepsinogen.
Gastric juice of infants contains?
Gastric juice of infants contains pepsinogen, lipase and rennin. Gastric juice does not contain amylase,maltase & nuclease.
Which one of the following statement is false regarding digestion and absorption of food in humans?
(a) Pepsinogen is secreted into gastric juice from both mucous cells and chief cells. Oxyntic cells secrete hydrochloric acid (HCl) and intrinsic factor.
Massive ions like Na+ facilitate the absorption of substances like amino acids and glucose through co-transport.
Chylomicrons are lipoprotein particles synthesized by intestinal epithelial cells and are transported from intestine into blood capillaries via lacteal.
About 30% of starch digestion happens in the mouth. However, it will vary a bit depending on how long food is chewed, how much moisture there is in the mouth, and how much moisture the starch can absorb.
Vitamin B6 is also called:-
(c) Vitamin B6, also called pyridoxine is widely distributed in cereal grains, yeast, liver, milk, etc. It is a constituent of a coenzyme (pyridoxal phosphate) involved in amino acid metabolism. Deficiency causes retarded growth, dermatitis, convulsions, and other symptoms.
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