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The esophagus passes through a hole in the diaphragm called the esophageal hiatus before reaching the lower esophageal sphincter . This muscular structure allows for passage of material through to the stomach but is normally contracted to prevent stomach acid from irritating the lower esophagus.
The Caecum is the enlarged region
in mammalian herbivores of the large intestine.
The function of this pouch is to accommodate microorganisms that help
breakdown accumulated plant matter such as
cellulose that otherwise cannot be broken down by the host animal itself.
Answer:(a)