FUNCT. ORG OF THE DIGESTIVE SYST

FUNCT. ORG OF THE DIGESTIVE SYST - particles Pr

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FUNCTIONAL ORGANIZATION OF THE DIGESTIVE SYSTEM - four processes to get nutrients into the body:  Motility    the process of moving food through the gut and dispersing it into small  particles Two types of muscle in gut Circular bands of muscles ringing the GI  Longitudinal muscles running along it Produce two kinds of contraction: Peristalsis - the rhythmic contraction of the circular muscles surrounding the gut.  A wave of contraction travels the length of the gut pushing the mixture of food  and digestive juices ( chyme) , ahead of it. Relaxed muscles ahead of the  contraction receive the mass of chyme ( bolus). Segmentation - mixes food with digestive secretions and breaks up the bolus  Both are responsible for the sounds of digestion  Stomach - digestive organ that acts as a reservoir and slowly releases food into  the small intestine for digestion  Sphincters
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FUNCT. ORG OF THE DIGESTIVE SYST - particles Pr

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