WELCOME

EASWARI S.V.PNATURAL SCIENCEREG NO:-181/13376011

NEW B.Ed COLLEGE ,NELLIMOODUNEW B.Ed COLLEGE ,NELLIMOODU

MOVEMENT OF FOOD THROUGH OESOPHAGUS

The chewed food in the mouth Pharynx

Uvula Epiglottis

Prevent food from entering nasal cavity

Prevent food from entering trachea

Pharynx oesophagus

Contraction of involuntary muscles in oesophagus

UNIDIIRECTIONAL

•The Oesophagus is surrounded at the top and bottom by two muscular rings

•1. upper esophageal sphincter 2. lower esophageal sphincter,

•Act to close the esophagus when food not being swallowed

•The Oesophageal sphincters are functional, but not anatomical sphincters, meaning that they are sections of the esophageal wall that act as a sphincter, but do not have distinct thickenings like other sphincters

•The Oesophagus is surrounded at the top and bottom by two muscular rings

•1. upper esophageal sphincter 2. lower esophageal sphincter,

•Act to close the esophagus when food not being swallowed

•The Oesophageal sphincters are functional, but not anatomical sphincters, meaning that they are sections of the esophageal wall that act as a sphincter, but do not have distinct thickenings like other sphincters

Food reaches the stomach in 8 sec

storedstored

Digestion completes in stomach in 4-5

hours

Digestion completes in stomach in 4-5

hours

Continous movement

Grinds & mixes food throughly

Mechanical digestion