Internal anatomy of a crayfish:
edible freshwater crustacean, with pincers on the two forelegs.
Encephalon: site of the mental functions of a crayfish.
Stomach: part of the digestive tract between the esophagus and
Heart: blood-pumping organ of the crayfish.
Gonad: sex gland of a crayfish.
Extensor muscles: muscle that extends the tail of the crayfish.
Anus: outlet of the digestive tract.
Flexor muscle: muscle that bends the tail of the crayfish.
Digestive gland: glandular organ that produces digestive enzymes.
Ganglion of ventral nerve cord: budge related to a collection
of nerves of the abdomen of a crayfish.
Ventral nerve cord: collection of nerves in the abdomen of a
Maxilliped: pair of appendages of a crayfish used for holding
Esophagus: part of the digestive tract between the mouth and
Mandible: lower jaw.
Mouth: entrance to the digestive tract.
Green gland: antennary gland.
Eye: sight organ of a crayfish.