In animal anatomy, the mouth is the first portion of the alimentary canal that receives food.
Some animal phyla, including vertebrates, have a complete digestive system, with a mouth at one end and an anus at the other. Which end forms first in ontogeny is a criterion used to classify animals into protostome and deuterostome. The first space of the mouth is the mouth cavity, bounded laterally and in front by the alveolar arches (containing the teeth), and posteriorly by the isthmus of the fauces.
Read more about Mouth: In Human Anatomy
Famous quotes containing the word mouth:
“his mouth redeemed
His insufficient eyes, forever sad:
In them there was no life-glimpse, good or bad,
Nor joy nor passion in them ever gleamed;”
—Edwin Arlington Robinson (1869–1935)
“...out of the abundance of the heart the mouth speaks.”
—Bible: New Testament, Matthew 12:34.
“When the reptile is attacked at one mouth of his burrow, he shows himself at another.”
—Henry David Thoreau (1817–1862)