1. Earthworm Dissection Review

2.
This flap of tissue that overhangs the mouth opening in an earthworm is called the _______________ 
prostomium
The bristles located on each segment along the ventral surface of your earthworm are called _________
setae

3. B-end farthest from clitellum
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Which end is the posterior end of this worm?
A B A
B-end farthest from clitellum B
The opening at end B is the __________
anus

4. store sperm received from other worms
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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. male genital pores seminal vesicles The holes labeled #4 are the
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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. The ______________ system deals with what’s on the outside surface of the animal.
integumentary
The _________ stores food in the
earthworm’s digestive system.
crop

7. setae prostomium esophagus typhlosole Cerebral ganglia
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 ______________
setae
prostomium
esophagus
typhlosole
intestine
skin
Cerebral ganglia

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

9. A- end closest to clitellum
Which is the
anterior end of this worm?
A B
A- end closest to clitellum B
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10. 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 worm to give away________________________
aortic arches
Seminal receptacles
crop
clitellum
gizzard
Seminal vesicles

11. Structure #1 is called the ______________
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Structure #1 is called the ______________
Its function is to _______________________
It belongs to the ___________ system.
clitellum
make mucous
reproductive

12. This white line (#2) that runs
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This white line (#2) that runs
along under the digestive system is the _____________________
Ventral nerve cord

13. This white line (#2) belongs to the________________ system. nervous
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This white line (#2) belongs to the________________ system.
nervous

14.  The arrow is pointing at the ____________________ cuticle 
The arrow is pointing at the ____________________
Give its function _________________
cuticle
Protection; prevent drying out

15.  The arrow is pointing at the ____________________ 
The arrow is pointing at the ____________________
Name the body system _________________
SEMINAL VESICLES
REPRODUCTIVE

16.  The arrow is pointing at the ____________________ 
The arrow is pointing at the ____________________
Give its function _________________
CROP
Store food waiting to be digested

17.  The arrow is pointing at the ____________________ 
The arrow is pointing at the ____________________
Give its function _________________
GIZZARD
GRIND FOOD

18.  The arrow is pointing at the ____________________ 
The arrow is pointing at the ____________________
Give its function _________________
PHARYNX
Push food down into digestive system

19.  The arrow is pointing at the ____________________ 
The arrow is pointing at the ____________________
Give its function _________________
intestine
Absorb nutrients

20.  The dark line the arrow is pointing at is the ____________________ 
The dark line the arrow is pointing at is the ____________________
Give its body system_________________
Dorsal blood vessel
circulatory

21.   The arrows are pointing at the ____________________  
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. Structure A is called the ______________
Image from: A
Structure A is called the ______________
clitellum

25. The function of these structures is to __________________________
These structures which arch over the 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 top of the digestive system is the ___________________
Dorsal blood vessel

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

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

30. dorsal
The ___________surface is facing you in this view of the earthworm dorsal ventral
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. The ____________ connects the pharynx with the crop.
esophagus
receptacles
Seminal ____________ store sperm collected from other worms.

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

34. Each of these blue dividers that separate the segments inside into compartments is a ____________
Septum (pl. septa)

35. sperm These openings are the ____________________ Male genital pores
They are the exit openings
for ______________
sperm urea feces
Male genital pores  
sperm
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36. Store sperm to give away 
These 6 large white sacs are called __________________.
Their job is to
_________________________________
seminal vesicles
Store sperm to give away