Earthworm Dissection Review

1. Earthworm Dissection Review

2. http://www.riverside.sd43.bc.ca/art/long%5Fbi%5F11/oligochaeta/http://www.riverside.sd43.bc.ca/art/long%5Fbi%5F11/oligochaeta/  This flap of tissue that overhangs the mouth opening in an earthworm is called the _______________ prostomium The bristles located on eachsegment along the ventral surface ofyour earthworm are called _________ setae

3. Image from: http://www.nysite.com/nature/fauna/page/earthworm.jpg A Which end is the posterior endof this worm? A B B-end farthestfrom clitellum B The opening at end B is the __________ anus

4. Image from: http://biog-101-104.bio.cornell.edu/BioG101_104/tutorials/animals/earthworm.html These small white sacs (#1) were seen along side & in front of larger sacs. They are called ________________Their function is to _____________________________ Seminal receptacles store sperm received from other worms

5. Image from: http://biog-101-104.bio.cornell.edu/BioG101_104/tutorials/animals/earthworm.html The holes labeled #4 are the _____________________. They connect inside to the sacs called _______________ that store sperm made by this worm. male genital pores seminal vesicles

6. integumentary The ______________ system deals with what’s on the outside surface of the animal. The _________ stores food in the earthworm’s digestive system. crop

7. setae prostomium Tell which body part is involved in each function in an Earthworm: Provide traction __________________ Tissue flap that covers mouth _____________ Connects pharynx and crop ___________ Infolding for more surface area inside intestine ________________ Where nutrients are absorbed _______________ Where gases are exchanged ___________ Act as the brain ______________ esophagus typhlosole intestine skin Cerebral ganglia

8. A Structure A at the anterior end of thedigestive system is the ____________.It is part of the ___________ system. pharynx digestive

9. A Which is the anterior end of this worm? A B A- end closestto clitellum B Image from: http://www.nysite.com/nature/fauna/page/earthworm.jpg

10. aortic arches Tell which body part is involved in each function in an Earthworm: Pump blood __________________ Store sperm from other worms ____________________ Store food _________________ Make mucous for reproduction _________________ Grind food _______________ Store sperm from this wormto give away________________________ Seminal receptacles crop clitellum gizzard Seminal vesicles

11. Image from: http://biog-101-104.bio.cornell.edu/BioG101_104/tutorials/animals/earthworm.html Structure #1 is called the ______________ Its function is to _______________________ It belongs to the ___________ system. clitellum make mucous reproductive

12. Image from: http://biog-101-104.bio.cornell.edu/BioG101_104/tutorials/animals/earthworm.html   This white line (#2) that runs along under the digestive system is the _____________________ Ventral nerve cord

13. Image from: http://biog-101-104.bio.cornell.edu/BioG101_104/tutorials/animals/earthworm.html   This white line (#2) belongs to the________________ system. nervous

14. http://www.flushing.k12.mi.us/srhigh/tippettl/biology/lum/cuticle.htmlhttp://www.flushing.k12.mi.us/srhigh/tippettl/biology/lum/cuticle.html  The arrow is pointing at the ____________________ Give its function _________________ cuticle Protection; prevent drying out

15. http://www.flushing.k12.mi.us/srhigh/tippettl/biology/lum/vessel.htmlhttp://www.flushing.k12.mi.us/srhigh/tippettl/biology/lum/vessel.html  The arrow is pointing at the ____________________ Name the body system _________________ SEMINAL VESICLES REPRODUCTIVE

16. http://www.flushing.k12.mi.us/srhigh/tippettl/biology/lum/vessel.htmlhttp://www.flushing.k12.mi.us/srhigh/tippettl/biology/lum/vessel.html  The arrow is pointing at the ____________________ Give its function _________________ CROP Store food waiting to be digested

17. http://www.flushing.k12.mi.us/srhigh/tippettl/biology/lum/vessel.htmlhttp://www.flushing.k12.mi.us/srhigh/tippettl/biology/lum/vessel.html The arrow is pointing at the ____________________ Give its function _________________  GIZZARD GRIND FOOD

18. http://www.flushing.k12.mi.us/srhigh/tippettl/biology/lum/vessel.htmlhttp://www.flushing.k12.mi.us/srhigh/tippettl/biology/lum/vessel.html  The arrow is pointing at the ____________________ Give its function _________________ PHARYNX Push food down intodigestive system

19. http://www.flushing.k12.mi.us/srhigh/tippettl/biology/lum/vessel.htmlhttp://www.flushing.k12.mi.us/srhigh/tippettl/biology/lum/vessel.html The arrow is pointing at the ____________________ Give its function _________________  intestine Absorb nutrients

20. http://www.flushing.k12.mi.us/srhigh/tippettl/biology/lum/vessel.htmlhttp://www.flushing.k12.mi.us/srhigh/tippettl/biology/lum/vessel.html  The dark line the arrow is pointing at is the ____________________ Give its body system_________________ Dorsal blood vessel circulatory

21. http://www.flushing.k12.mi.us/srhigh/tippettl/biology/lum/gizzard.htmlhttp://www.flushing.k12.mi.us/srhigh/tippettl/biology/lum/gizzard.html The arrows are pointing at the ____________________ Give its function _________________   Aortic arches Pump blood

22. A Structure A which is an infolding that hangs down inside the intestine to increase surface area is the ___________________ typhlosole

23. Name a part of the nervous system in an earthworm. Cerebral ganglia OR ventral nerve cord The typhlosole is part of the _____________ system. digestive

24. Image from: http://www.nysite.com/nature/fauna/page/earthworm.jpg A Structure A is called the ______________ clitellum

25. These structureswhich arch overthe top of the esophagus are the_______________ aortic arches The function of these structures is to __________________________ They belong to the ___________ system. Pump blood circulatory

26. Tell which body system the part belongs to in an Earthworm: Nephridia __________________ Seminal vesicles _______________ Crop _________________ Clitellum _________________ Aortic arches _______________ Cerebral ganglia ______________ excretory Male reproductive digestive reproductive Circulatory Nervous

27.   This dark line that runs along the topof the digestive system is the ___________________ Dorsal blood vessel

28. Hint: A is squishyB is hard A B A= _____________ B = _____________   crop gizzard

29. A intestine  Structure A = __________ absorb nutrients It’s function is to ____________________

30. The ___________surface is facing you in this view of the earthworm.dorsal ventral dorsal How can you tell? Can see clitellum on this side, it doesn’t go all the way around on ventral surface

31. gizzard The function of the ______________ is to grind up the food. In an earthworm the function of the _____________ is to excrete nitrogen waste and regulate the balance of water and ions. nephridia

32. esophagus The ____________ connectsthe pharynx with the crop. receptacles Seminal ____________ store spermcollected from other worms.

33. intestine Tell which body part is involved in each function in an Earthworm: Absorb nutrients __________________ Opening for sperm from this worm to exitwhen it trades ____________________ Excrete nitrogen waste _______________ Protective coating _________________ Pull food into digestive system__________ Produce eggs____________ Produce sperm ______________ Male genital pore nephridia cuticle pharynx ovary testis

34. Each of these blue dividers that separatethe segments inside into compartments isa ____________ Septum (pl. septa)

35. Male genital pores These openings are the ____________________ They are the exit openings for ______________ sperm urea feces   sperm Image from: http://biodidac.bio.uottawa.ca/

36.   These 6 large white sacs are called __________________. Their job is to _________________________________ seminal vesicles Store sperm to give away