Upload
everly
View
40
Download
0
Tags:
Embed Size (px)
DESCRIPTION
Central disk Arm or ray Madreporite Spines Eye spot ( oce llus ) at tip of each ray. Aboral surface with Madreporite. 5. 1 1 1 1. 22 2. 5. 3. 4. 4. 5. 5. 3. spine. 3 3. 6. Central disk Arm or ray - PowerPoint PPT Presentation
Citation preview
Aboral surface with Madreporite1. Central disk2. Arm or ray3. Madreporite4. Spines5. Eye spot (ocellus) at tip of each ray
1 1
1 12 2 2
3
44
3
5
55
5
3
3
spine
61. Central disk2. Arm or ray3. Madreporite (stone canal to this structure underneath4. Spines5. Eye spot (ocellus) at tip of each ray6. Pedicellaria
5. Eye spot (ocellus)
6
4
1. Central disk2. Arm or ray3. Madreporite4. Spines5. Eye spot (ocellus) at tip of each ray6. Pedicellaria
4
4
Pedicellaria 3X
4
1. Central disk2. Arm or ray3. Madreporite4. Spines5. Eye spot (ocellus) at tip of each ray6. Pedicellaria
6
6
6
6. Pedicellaria40X
6. Pedicellaria100X
1. Pedicellaria 400X
1. Central disk2. Arm or ray3. Madreporite4. Spines5. Eye spot (ocellus) at tip of each ray6. Pedicellaria7. Pyloric stomach (in forceps)8. Ossicles
1
2
2
4
7 7 7
7
8
88
7. Pyloric stomach9. Stone canal
9
7 7
7 7
9
10 10
10
10
9. Stone canal10. Ring canal (connects to all five radial canals)
9
9
9
9. Stone canal 3X
9
9
9
11.Pyloric caeca11a. Pyloric duct
11 11 11 11 11 11
11a 11a 11a
11a
8. Ossicles11. Pyloric caeca11a. Pyloric duct12. Ambulacral ridge13. Gonads14. Ampulla
Partial lateral and dorsal viewPyloric caeca moved to side
11 11 11 11
1212
13
13 13
14 14 14
8 8
11. Pyloric caeca (removed)12. Ambulacral ridge13. Gonads14. Ampulla8. Ossicles
12 12 12 12 12 12 12
13 13 13 13
13 13 13
4 4 4 4 4 4
14 14 14 14 14 14 14
11
8 8 8
5. Ossicles 1x
2 2 2
2
2
1. Pyloric caeca (removed)2. Ambulacral ridge3. Gonads4. Ampulla5. Ossicles
3 3 3
3 3
4 44 4
1. Central disk15. Tube feet in ambulacral groove 15a suckers at distal end of tube foot16. Ambulacral groove17. Mouth
17
15a
15
3
3
15a
15
15
16
16
16
16
16
Oral surface with mouth
11
1
11
15a. Suckers at distal end tube feet 1X
15a. Tube feet at distal end of tube feet 3X
3X
12. Ambulacral ridge15. Tube foot15a. Sucker at distal end of tube foot18. Radial canal19. Lateral canal
18
18
12 12
Dissecting pin in contact with radial canal just underneath of the ambulacral ridge.The lateral canals connect the tube feet to the radial canal.
Oral view of 3mm cross section of arm
15
15
15a15a
12. Ambulacral ridge15. Tube feet15a sucker at distal end of tube foot18. Radial canal19. Lateral canal20. Sucker
18
18
19
19
15
1515a
Oral view of 3mm cross section of arm showing lateral canal connecting radial canal with aSingle tube foot
12 12
15a
15a
14 14
coelom
15a 15a
11 11
12 12
16 16 16 16
11. Pyloric caeca11a. Pyloric duct12. Ambulacral ridge13. Gonads14. Ampulla15. Tube feet in ambulacral groove15a suckers at distal end of tube feet 16. Ambulacral groove
11
1515
Cross section of arm 1X
11 11 11
Aboral surface removed showingPyloric stomach 1X
Contents of stomach
clam
clam
Ribs or spines
clam
stone
crab
Contents of stomach
Contents of stomach
stone
clam
Plate of another echinoderm
crab
Ribs or spinesUnknown glasslike sheet