Question

what is Human Digestive System?

How does food move through your digestive tract? ...

Where does most of the digestive process take place? ...

What does the liver do to help digestion? ...

Which of these can harm the intestinal lining? ...

Which of these best maintains intestinal health? ...

Which of these can cause heartburn?

Answer 1

Biomacromolecules (carbohydrates, proteins etc.) in food cannot be utilized by our body

in their original form.

 They have to be broken down and converted into simple substances (glucose, amino

acids etc.) in the digestive system.

 During the digestion process, Biomacromolecules like

1. carbohydrates get broken into simple sugars such as glucose,

2. fats into fatty acids and glycerol,

3. proteins into amino acids.

 This process of conversion of complex food substances to simple absorbable forms is

called digestion.

Alimentary Canal

 The food passes through a continuous canal called alimentary canal. The canal can be

divided into various compartments: (1) the buccal cavity, (2) foodpipe or oesophagus, (3)

stomach, (4) small intestine, (5) large intestine ending in the rectum and (6) the anus.

 The activities of the gastro-intestinal tract [alimentary canal] are under neural and

hormonal control for proper coordination of different parts.

 The sight, smell and/or the presence of food in the oral cavity can stimulate the

secretion of saliva.

 Gastric and intestinal secretions are also, similarly, stimulated by neural signals.

 The muscular activities of different parts of the alimentary canal can also be moderate by neural mechanisms