with the help of labelled diagram explain digestive system of man
Please refer the solution below for the said query
Digestion - Process of conversion of complex food substances into simpler absorbable forms to meet the energy requirements of the body.
The combination of organs that carries the function of digestion is called digestive system. Parts of alimentary canal from anterior end to posterior end are
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Buccal Cavity (oral cavity): It contains tongue and teeth.
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Dental formula of adult human −
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Enamel forming hard surface of teeth is the hardest substance of human body. It helps in mastication of food.
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Tongue − Attaches to floor of buccal cavity by frenulum and bears projections called papillae, which in turn bear taste buds
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Pharynx
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Oesophagus (food pipe) and trachea (wind pipe) both open into pharynx.
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Entry of food into glottis (the opening of trachea) is prevented by epiglottis (a cartilaginous flap).
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Oesophagus
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This thin, long tube leads to stomach.
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Gastro-oesophageal sphincter regulates oesophagus opening into stomach.
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Stomach
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Location − upper left part of abdominal cavity
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Three parts of stomach:
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Cardiac − where oesophagus opens
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Fundic − where food rests and undergoes digestion
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Pyloric − which opens into duodenum
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Small Intestine
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Pyloric sphincter guards opening of stomach into duodenum.
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Large Intestine
- Anus: External opening for removal of undigested food.
Hope this information clears your doubt about the topic.
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