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Crayfish Parts Review Image from: http://biog-101-104.bio.cornell.edu/BioG101_104/tutorials/animals/crayfish.html Walking legs #6 = _____________________ antennae a = _____________________ A = _____________ telson uropods B= ______________ B A Image from: http://www.spc.cc.tx.us/biology/jmckinney/Studyimages/crayfish/crayfishdissectlist.html Image from: http://www.aa.psu.edu/div/mns/biology/crayfish/crayfishtable.htm This structure is part of the crayfish’s nervous system. ____________ These structures are the __________ gills These organs are part of the ________________ respiratory system Image from: http://faculty.clintoncc.suny.edu/faculty/Michael.Gregory/files/Bio%20102/Bio%20102%20Laboratory/ Protostomes/protostomes.htm Image from: http://biog-101-104.bio.cornell.edu/BioG101_104/tutorials/animals/crayfish.html Compound eye #8 = _____________________ rostrum #9 = _____________________ #1 = ? Digestive glands #1 #2 #2 = ? heart Image from: http://www.aa.psu.edu/div/mns/biology/crayfish/crayfishtable.htm Image from: http://biog-101-104.bio.cornell.edu/BioG101_104/tutorials/animals/crayfish.html swimmerets #2 = _____________________ male This crayfish is a________ male female This crayfish is a ______________ female female male How can you tell? First pairs of swimmerets don’t form V and bend up towards thorax to carry sperm Image from: http://biog-101-104.bio.cornell.edu/BioG101_104/tutorials/animals/crayfish.html Image from: http://biog-101-104.bio.cornell.edu/BioG101_104/tutorials/animals/crayfish.html #4 = _____________________ intestine #3 = _____________________ Abdominal muscles Image from: http://biog-101-104.bio.cornell.edu/BioG101_104/tutorials/animals/crayfish.html #4 marks the region of the body called cephalothorax the _____________________ The part of the exoskeleton that covers carapace this area is the ________________ Image from: http://biog-101-104.bio.cornell.edu/BioG101_104/tutorials/animals/crayfish.html These structures like antenna, antennules, walking legs, maxillae, maxillipeds, etc. are appendages called _____________________ intestine #1 heart #2 Abdominal muscle stomach #3 Image from: http://biog-101-104.bio.cornell.edu/BioG101_104/tutorials/animals/crayfish.html abdomen #3 = _____________________ cheliped (key-luh-ped) #7 = _____________________ Image from: http://biog-101-104.bio.cornell.edu/BioG101_104/tutorials/animals/crayfish.html #2 = ___________ gills The function of this organ is to ________________ remove oxygen from water Image from: http://biog-101-104.bio.cornell.edu/BioG101_104/tutorials/animals/crayfish.html #2 = ? Green glands Their function is to ________________ Remove nitrogen waste & excess water (osmoregulation) This red appendage is the cheliped _______________ It is used for ___________________________ capturing food & defense Image from: http://biog-101-104.bio.cornell.edu/BioG101_104/tutorials/animals/crayfish.html This crayfish is a male ______________ female male How can you tell? First pairs of swimmerets form V and bend up towards thorax to carry sperm The arrow is pointing at the ___________________ Cerebral ganglia It is part of the __________________ nervous system #23 = ___________ antenna #24 = __________________ antennules Which of these can sense equilibrium? #24 - antennules #5 = ___________ Cardiac stomach #6 = ____________________ Pyloric stomach These openings that allow blood back into the heart are called ____________________ Ostia (sing. ostium) Watch a crayfish heart movie Image from: Ostia movie: http://www.quia.com/jg/265982list.html http://www.gsu.edu/~bioasx/heartbeat.html Image from: http://biog-101-104.bio.cornell.edu/BioG101_104/tutorials/animals/crayfish.html # =4 maxillipeds ___________ Their function is for touch, taste, & _______________________________ to manipulate food These structures colored pink are the _____________ antennules They can sense ______________________ touch, taste, & equilibrium Match the body part with its function antennules Sense touch, taste, & equilibrium __________________ mandible Chew food _____________________ Digestive gland Make digestive enzymes __________________________ swimmerets Transfer sperm/carry young _______________________ Gastric mill Teeth in stomach to grind food ______________________ Match the body part with its function chelipeds Capture food and defense __________________ Maxilla, maxilliped Manipulate food in crayfish _____________________ Maxilla, swimmerets, walking legs create water currents __________________________ rostrum Cover and protect eyes/brain _______________________ carapace Cover and protect gills ______________________ Match the body part with its function Feelers that sense touch and taste but NOT Equilibrium __________________ antennae Green glands Excrete nitrogen waste _____________________ Connect to exoskeleton Adductor muscles and move mouthparts __________________________ Pump hemolymph heart _______________________ ostia Openings to let blood back into heart ______________________ Match the body part with its function arteries Carry blood away from the heart __________________ gills Exchange gases _____________________ Cerebral ganglia Acts as “brain” __________________________ Make sperm _______________________ testes Compound eye vision ______________________