What is true about the Peyer's patches in the intestinal wall?

1. They are lymphoid nodules located in the ileum

2. They are lymph nodes located in the duodenum

3. They protect the large intestine from bacteria in the small intestine, which might pass through the ileocecal valve

4. They are lymphoid nodules located in the ileum and protect the large intestine from bacteria in the small intestine, which might pass through the ileocecal valve

Identify a submucosal gland:

Most of the water in alimentary canal is absorbed in small intestine. But about 1500 ml per day reaches it. What is the approximate amount of water that is absorbed by the large intestine?
1. 100 mL
2. 400 mL
3. 1300 mL
4. 1495 mL

The mechanism by which the fat-soluble vitamins move across the intestinal mucosa is:
1. facilitated diffusion
2. active cotransport
3. active antiport
4. simple diffusion

Glucose concentration is likely to be most variable in:
1. aorta
2. hepatic vein
3. renal vein
4. hepatic portal vein

The greatest benefit of bacterial symbiosis to humans amongst the following would be:
1. production of vitamins A and C
2. generation of gases needed for elimination
3. absorption of organic materials
4. production of biotin and vitamin K

Our teeth are
1. Acrodont and homodont
2. Homodont and polyphyodont
3. Thecodont, diphyodont and heterodont
4. Acrodont, homodont and polyphyodont

The dysfunction of which of the following will most adversely affect the digestion of food in humans?
1. Gall bladder
2. Stomach
3. Pancreas
4. Salivary glands

Which of the following is the structural and functional unit of liver?
1. Hepatic cells
2. Hepatic cord
3. Hepatic lobule
4. Hepatic lobe

Process of digestion is accomplished by —
1. Only mechanical process
2. Only chemical process
3. Neither mechanical nor chemical process
4. Both mechanical and chemical processes