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Earthworm Dissection Review

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Presentation on theme: "Earthworm Dissection Review"— Presentation transcript:

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
Image from: 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
Image from: 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
Image from: 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 Image from:

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 ______________
Image from: 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
Image from: 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
Image from: 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 Image from:

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


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