|The ____ canal is the tubular passage from the mouth to anus.
|Nerves in the limbs are part of the ____ nervous system.
|The ____ contraction of the intestine wall is peristalsis.
|The small intestine is ____ than the large intestine.
|The stomach contains ____ juices that help digest food.
|Many digestive enzymes ____ (cut apart) specific molecules.
|The retina transmits light impulses to the ____ nerve.
|Bile is a yellowish green liquid that helps ____ fats.