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a strong ring of smooth muscle at the end of the pyloric canal which lets food pass from the stomach to the duodenum.
neurons that have more than two outgrowths from the cell body.
a large tongue-shaped organ in the mammalian body which secretes hormones and digestive enzymes...
the body system concerned with the digestion and absorption of nutrients.
(also called autotrophic organisms) organisms that produce their own organic food, mainly...