1. Crayfish parts practice

2. Name this pincher claw Give a function. cheliped Catch food, defense Image by Riedell/Vanderwal © 2005

3. The arrows are pointing at the _________________ Give a function. Give the body system. Green glands Excrete nitrogen waste; osmoregulation excretory Image by Riedell/Vanderwal © 2005

4. The arrows are pointing at the _________________ Give a function. maxillipeds Touch, taste, manipulate food Image by Riedell/Vanderwal © 2005

5. The arrows are pointing at the _______________ Name the body segment these are attached to. Walking legs thorax Image by Riedell/Vanderwal © 2005

6. Name #1 Give a function. antennules Sense touch, taste, & equilibrium Image by Riedell/Vanderwal © 2005 #1 #2

7. The arrows are pointing at the _________________ Give a function. Name the body system. intestine Finish digestion, absorb nutrients, collect/remove digestive waste digestive Image by Riedell/Vanderwal © 2005

8. This thin white line is the _________________ Give the body system. Ventral nerve cord nervous Image by Riedell/Vanderwal © 2005

9. The probe is pointing at the _________________ Give a function. maxilla http://www.flushing.k12.mi.us/srhigh/tippettl/biology/cray/index.html Manipulate food Last pair (bailers) move water over gills

10. Which of these crayfish is a male? female male Image by Riedell/Vanderwal © 2005

11. Name these dark ovals Give a body system Adductor muscles muscular Image by Riedell/Vanderwal © 2005

12. Name this exit opening Name the body system(s) that use this as an exit. anus Digestive only Image by Riedell/Vanderwal © 2005

13. Name this section of the body TRUE or FALSE This is a tagma. abdomen False Image by Riedell/Vanderwal © 2005

14. Name this piece of exoskelton that covers the main body in a crayfish Name the polysaccharide that makes it “flexible” carapace chitin Image by Riedell/Vanderwal © 2005

15. The teeth seen here inside the stomach are called the _______________ Gastric mill Image by Riedell/Vanderwal © 2005

16. Name #2 Give a function. antenna Sense touch & taste, Image by Riedell/Vanderwal © 2005 #1 #2

17. Name this small white spot. Give a function Name the body system Cerebral ganglia Acts as the brain Image by Riedell/Vanderwal © 2005 nervous

18. Name these tail sections. uropods Image by Riedell/Vanderwal © 2005

19. Which of these crayfish is a female? female male Image by Riedell/Vanderwal © 2005

20. Name the body region #4 cephalothorax Image by Riedell/Vanderwal © 2005

21. Which of these is a tagma? #4 or #5 #4 #5 #4- made by joining head + thorax Image by Riedell/Vanderwal © 2005

22. The pink arrow is pointing at the _________________ Give a function. Make bile Finish digestion Absorb nutrients Digestive gland http://www.flushing.k12.mi.us/srhigh/tippettl/biology/cray/index.html

23. Name this tail section telson Image by Riedell/Vanderwal © 2005

24. USE your direction words to answer This crayfish is showing you its _______________ surface. ventral Image by Riedell/Vanderwal © 2005

25. USE your direction words to answer This crayfish is showing you its _______________ surface. Image by Riedell/Vanderwal © 2005 dorsal

26. #15. The arrow is pointing to the crayfish’s _______________ end. USE your direction words to answer Image by Riedell/Vanderwal © 2005 anterior

27. This space that surrounds the organs is called the ____________. coelom Image by Riedell/Vanderwal © 2005

28. The piece that sticks out between the eyes is the ______________. rostrum Image by Riedell/Vanderwal © 2005

29. This thin white line = ___________________ Give the body system Ventral nerve cord nervous http://www.flushing.k12.mi.us/srhigh/tippettl/biology/cray/index.html

30. Name this part Give a body system gonad reproductive http://www.flushing.k12.mi.us/srhigh/tippettl/biology/cray/index.html

31. The probe is pointing at the _________________ Give a function. Manipulate food touch taste mandible http://www.flushing.k12.mi.us/srhigh/tippettl/biology/cray/index.html

32. Yellow arrow = __________________ Pink arrow = ___________________ Pyloric stomach Cardiac stomach http://www.flushing.k12.mi.us/srhigh/tippettl/biology/cray/index.html Manipulate food touch

33. Name these feathery appendages Give a function Transfer sperm (males), carry eggs/embryos (females), create water currents over eggs swimmerets http://www.flushing.k12.mi.us/srhigh/tippettl/biology/cray/index.html

34. Name it Give the function Pump hemolymph (blood) heart Manipulate food touch Image by Riedell/Vanderwal © 2005 The openings in the structure above are called _____________ Give the body system. ostia circulatory