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Crayfish Anatomy
This is a basic anatomy of the crayfish parts, names and uses.
22
Biology
9th Grade
05/09/2012

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Term
Carapace
Definition
Covers the cephalothorax
Term
Waking legs
Definition
Movement, used for locomotion on land or the floor of a lake or river
Term
Swimmerets
Definition
Movement, swimming and reproduction
Term
Uropods/ telson
Definition
Movement, swimming only
Term
Chelipeds
Definition
Used for defense and grabbing onto prey.
Term
Antennules
Definition
Aid in balance and taste/touch sensations
Term
Antennae
Definition
Provide strong senses of taste and touch
Term
Gills
Definition
Respiratory, water and oxygen pass over these and are distributed throughout the body
Term
Maxillae
Definition
Respiratory, keep water flowing through the gills
Term
Heart
Definition
Circulatory system, pumps blood throughout the body
Term
Pericardial sinus
Definition
Circulatory system, cavty that holds the heart
Term
Sternal sinus
Definition
Circulatory system, gravity causes blood to fall here
Term
Green gland
Definition
Circulatory system, blood is passed through here and cleaned of impurities
Term
Mandibles
Definition
Digestive system, breaks food into small chunks
Term
Esophagus
Definition
Digestive system, Food enters here after it is broken up by mandibles
Term
Stomach
Definition
Digestive system, first region grinds food into particles, second stores these particles
Term
Digestive glands
Definition
Digestive system, secrete enzymes
Term
Intestine
Definition
Digestive system, if particles are too large to be digested they are sent to the intestine.
Term
Ganglia
Definition
Nervous system, composes the brain
Term
Nerve cord
Definition
Nervous system, send signles from the ganglia throughout the body
Term
Statocyst
Definition
Nervous system, helps with balance
Term
Gonad
Definition
Reproductive system, produces gametes, ovary for female, testis for male
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