53. Cows swallow their food
once and then this food goes
back to the mouth to be
chewed again. How can this
phenomenon be explained?

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The food ingested cows and other
animals passes first two
compartments of digestive tube
called rumen and the .
Within them the suffers the action
digestive enzymes released
micro-organisms that live in
mutualist ecological . In the
reticulum food is divided some
food bolus . After passing the
the food (cud) regurgitated
to the to be again and
swallowed in process called
rumination. digesting food then
the omasum where is
mechanically mixed. that the food
to the abomasum, organ
where the digestion takes
place. leaving the abomasum (
true stomach) the bolus gains the
.