1. Crayfish Parts Review

2. a = _____________________ antennae #6 = _____________________ Walking legs Image from: http://biog-101-104.bio.cornell.edu/BioG101_104/tutorials/animals/crayfish.html

3. A = _____________ B= ______________ telson uropods B A Image from: http://www.spc.cc.tx.us/biology/jmckinney/Studyimages/crayfish/crayfishdissectlist.html

4. This structure is part of the crayfish’s ____________ system. nervous Image from: http://www.aa.psu.edu/div/mns/biology/crayfish/crayfishtable.htm

5. These structures are the __________ gills These organs are part of the ________________ system respiratory Image from: http://faculty.clintoncc.suny.edu/faculty/Michael.Gregory/files/Bio%20102/Bio%20102%20Laboratory/ Protostomes/protostomes.htm

6. #9 = _____________________ rostrum #8 = _____________________ Compound eye Image from: http://biog-101-104.bio.cornell.edu/BioG101_104/tutorials/animals/crayfish.html

7. #1 = ? Digestive glands #2 = ? heart #1 #2 Image from: http://www.aa.psu.edu/div/mns/biology/crayfish/crayfishtable.htm

8. #2 = _____________________ swimmerets This crayfish is a________ male female male Image from: http://biog-101-104.bio.cornell.edu/BioG101_104/tutorials/animals/crayfish.html

9. This crayfish is a ______________ female male female 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

10. #4 = _____________________ #3 = _____________________ intestine Abdominal muscles Image from: http://biog-101-104.bio.cornell.edu/BioG101_104/tutorials/animals/crayfish.html

11. The part of the exoskeleton that covers this area is the ________________ carapace #4 marks the region of the body called the _____________________ cephalothorax Image from: http://biog-101-104.bio.cornell.edu/BioG101_104/tutorials/animals/crayfish.html

12. These structures like antenna, antennules, walking legs, maxillae, maxillipeds, etc. are called _____________________ appendages Image from: http://biog-101-104.bio.cornell.edu/BioG101_104/tutorials/animals/crayfish.html

13. Abdominal muscle #1#2 intestine heart stomach #3

14. #7 = _____________________ cheliped (key-luh-ped) #3 = _____________________ abdomen Image from: http://biog-101-104.bio.cornell.edu/BioG101_104/tutorials/animals/crayfish.html

15. #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

16. #2 = ? Green glands Their function is to ________________ Remove nitrogen waste & excess water (osmoregulation) Image from: http://biog-101-104.bio.cornell.edu/BioG101_104/tutorials/animals/crayfish.html

17. This red appendage is the _______________ cheliped It is used for ___________________________ capturing food & defense

18. This crayfish is a ______________ female male male How can you tell? First pairs of swimmerets 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

19. The arrow is pointing at the ___________________ Cerebral ganglia It is part of the __________________ system nervous

20. #23 = ___________ antenna #24 = __________________antennules Which of these can sense equilibrium? #24 - antennules

21. #5 = ___________ Cardiac stomach #6 = ____________________Pyloric stomach

22. These openings that allow blood back into the heart are called ____________________ Ostia (sing. ostium) Watch a crayfish heart movie Image from: http://www.quia.com/jg/265982list.html Ostia movie: http://www.gsu.edu/~bioasx/heartbeat.html

23. # =4 ___________ maxillipeds Their function is _______________________________ for touch, taste, & to manipulate food Image from: http://biog-101-104.bio.cornell.edu/BioG101_104/tutorials/animals/crayfish.html

24. These structures colored pink are the _____________ antennules They can sense ______________________ touch, taste, & equilibrium

25. Match the body part with its function Sense touch, taste, & equilibrium __________________ Chew food _____________________ Make digestive enzymes __________________________ Transfer sperm/carry young _______________________ Teeth in stomach to grind food ______________________ antennules mandible Digestive gland swimmerets Gastric mill

26. Match the body part with its function Capture food and defense __________________ Manipulate food in crayfish _____________________ create water currents __________________________ Cover and protect eyes/brain _______________________ Cover and protect gills ______________________ chelipeds Maxilla, maxilliped Maxilla, swimmerets, walking legs rostrum carapace

27. Match the body part with its function Feelers that sense touch and taste but NOT Equilibrium __________________ Excrete nitrogen waste _____________________ Connect to exoskeleton and move mouthparts __________________________ Pump hemolymph _______________________ Openings to let blood back into heart ______________________ antennae Green glands Adductor muscles heart ostia

28. Match the body part with its function Carry blood away from the heart __________________ Exchange gases _____________________ Acts as “brain” __________________________ Make sperm _______________________ vision ______________________ arteries gills Cerebral ganglia testes Compound eye