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Coelom in flatworms

Acoelomates

1

Fluid filled body cavity lined with mesodermal tissue

Coelom

2

How does the coelom affect movement?

It makes it more efficient

3

Feeding structure in flatworms

Pharynx

4

Respiration, circulation, and excretion in flatworms

Diffusion

5

Flame cells in flatworms (what do they do?)

Remove waste

6

Muscular tube that pumps food into the digestive cavity (flatworms)

Pharynx

7

Groups of nerve cells that control the nervous system and respond to the environment

Ganglia

8

Detects light for flatworms

Eyespot

9

Two movement structures in flatworms

Muscles and cilia

10

Group of flatworms that are free swimming bottom dwellers

Tubellarians

11

Example of a tubellarian

Planarian

12

Two structures in flatworms response

Ganglia and eyespot

13

Group of flatworms that are parasitic

Flukes

14

Example of a fluke

Trematoda

15

Group of flatworms that are parasitic to humans and have special heads, segments, and reproductive structures

Tapeworm

16

Male reproductive organs in tapeworms

Testes

17

Head of a tapeworm that hooks to the intestines

Scolex

18

Segments of a flatworm

Proglottids

19

Unsegmented worm with tapering ends

Roundworm

20

Coelom in roundworms

Pseudocoelom

21

What makes the coelom in roundworms pseudo?

It is only partially lined by the mesoderm

22

Openings on a roundworms

Mouth and anus

23

Structures in roundworms feeding

Grasping mouth parts and spines

24

Respiration, circulation, and excretion in roundworms

Diffusion

25

Response in roundworms

Several ganglia

26

Reproduction in roundworms

Male deposits sperm into female

27

Disease from uncooked meat

Trichinosis

28

Disease causing elephantiasis from mosquito bites

Filarial

29

Internal walls between each segment in Annelids

Septa

30

Bristles attached to each segment for movement in Annelids

Setae

31

Coelom in Annelids

Coelomates

32

Stores food in Annelids

Crop

33

Grinds food in Annelids

Gizzard

34

Pathway of food in Annelids

Mouth -> esophagus -> crop -> gizzard -> intestines -> anus

35

Circulation in Annelids

Closed circulatory system

36

Act as a heart to contract and pump blood

Dorsal blood vessel

37

Respiration in Annelids

Aquatic- gills
Land- diffuse gases through their moist skin

38

Excretion in Annelids

Digestive waste goes out the anus
Cellular waste goes out through nephridia

39

Response in Annelids

Ganglia and small brain that coordinates movement

40

Movement in Annelids

Muscles (circular and longitudinal)

41

Excretory organ within analids

Nephridia

42

Specialized reproductive organs in Annelids

Clitellum

43

Earthworm class

Oligochaeta

44

Leeches class

Hirudinea

45

Nadine Annelids

Polychaeta

46

Free swimming larval stage in mollusks

Trochophore

47

Movement structure used for crawling and burrowing in mollusks

Muscular foot

48

Thin layer of tissue that becomes covers most of the mollusk

Mantle

49

What is a mollusk shell made of?

Calcium carbonate

50

Collection of internal organs in mollusks

Visceral mass

51

Tiny teeth that scrape algae of rocks and drill through shells used for feeding in mollusks

Radula

52

Tube like structures which water enters and leaves the body in mollusks

Siphon

53

Respiration in mollusks

Aquatic- gills
Land- mantle cavity

54

Circulation in mollusks

Open circulatory system

55

Octopi and squid circulation

Closed circulatory system

56

Excretion in mollusks

Nephritis

57

Response in mollusks

Simple nervous system

58

Movement in mollusks

Jet propulsion by secreting mucus using siphons

59

Reproduction in mollusks

External fertilization

60

Snail class

Gastropoda

61

Clams, mussels, and oysters class

Bivalvia

62

Head region with single foot class

Cepholapoda