Most of the digestion occurs in
1. rectum
2. stomach
3. duodenum
4. small intestine
Which one of the following pairs of food components in humans reaches the stomach totally undigested?
1. Protein and starch
2. Starch and fat
3. Fat and cellulose
4. Starch and cellulose
Where is protein digestion accomplished?
1. Stomach
2. lleum
3. Rectum
4. Duodenum
The portion of human stomach into which the oesophagus opens is the:-
1. Cardiac
2. Fundus
3. Corpus
4. Pylorus
To move into the intestinal mucosa, fatty acids and glycerol are first incorporated into:
(1) Chyle
(2) Micelles
(3) Chylomicroms
(4) Lipoproteins
What regulates the opening of oesophagus into the stomach?
1. A membranous valve
2. A muscular sphincter
3. A mesodermal septum
4. A cartilaginous flap
Which of the following guards the opening of hepatopancreatic duct into the duodenum ?
(1) Illeocaecal valve
(2) Pyloric sphincter
(3) Sphincter of Oddi
(4) Semilunar valve
The following is a scheme showing the fate of carbohydrates during digestion in the
human alimentary canal. Identify the enzymes acting at stages indicated as A, B, C
and D. Choose the correct option from those given.
1. A = Amylase, B = Maltase, C = Lactase,D = Invertase
2. A = Amylase, B = Maltase, C = Invertase,D = Lactase
3. A = Amylase, B = Invertase, C = Maltase, D = Lactase
4. A = Amylase, B = Lactase, C = Maltase, D = Invertase
The oesophagus and trachea (wind pipe) open into:
(1) Gullet
(2) Glottis
(3) Larynx
(4) Pharynx
Our stomach is:
(1) U-shaped
(2) J-shaped
(3) C-shaped
(4) Rod-shaped