| Transverse sections (TS) | Image | Respiratory and vascular system | Digestive system | Reproductive and urinary systems | Sensory and nervous systems | Other organs |
|---|---|---|---|---|---|---|
| TS 1 |  |
Buccal cavity, tongue |
Nostril |
|||
| TS 2 |  |
Tongue, buccal cavity |
Nostril |
|||
| TS 3 |  |
Buccal cavity |
Eye, retina |
|||
| TS 4 |  |
Buccal cavity |
Retina, lens, |
|||
| TS 5 |  |
Gills |
Buccal cavity |
Cornea, retina, brain |
||
| TS 6 |  |
Gills, pseudobranchs |
Buccal cavity |
Brain, inner ear, eye | ||
| TS 7 |  |
Gills, operculum, ventral aorta |
Buccal cavity |
Brain |
||
| TS 8 |  |
Gills, operculum, heart |
Buccal cavity |
Brain |
Thyroid follicles |
|
| TS 9 |  |
Heart, operculum |
Buccal cavity |
Kidney |
Spinal cord, notochord |
Thyroid follicles |
| TS 10 |  |
Postcardinal vein, heart |
Buccal cavity |
Kidney |
Spinal cord, notochord |
Thymus |
| TS 11 |  |
Postcardinal vein , heart |
Oesophagus |
Kidney |
Spinal cord, notochord |
|
| TS 12 |  |
Portal vein |
Intestine, liver |
Kidney |
Spinal cord, notochord |
|
| TS 13 |  |
Intestine, liver, pancreas |
Kidney |
Spinal cord, notochord |
Spleen |
|
| TS 14 |  |
Swimbladder, pancreas, intestine |
Kidney |
Spinal cord, notochord |
Spleen |
|
| TS 15 |  |
Swimbladder, pancreas, intestine |
Kidney |
Spinal cord, notochord |
Spleen |
|
| TS 16 |  |
Swimbladder, pancreas, intestine |
Kidney |
Spinal cord, notochord |
||
| TS 17 |  |
Swimbladder, pancreas, intestine |
Kidney |
Spinal cord, notochord |
||
| TS 18 |  |
swimbladder, intestine |
Kidney, ovary |
Spinal cord, notochord |
||
| TS 19 |  |
Swimbladder, intestine |
Kidney, ovary |
Spinal cord, notochord |
||
| TS 20 |  |
Swimbladder, intestine |
Ureter, ovary |
Spinal cord, notochord |
||
| TS 21 |  |
Swimbladder, intestine |
Ureter, ovary |
Spinal cord, notochord |
||
| TS 22 |  |
Swimbladder, intestine , pancreas |
Ureter, testis |
Spinal cord, notochord |
||
| TS 23 |  |
Swimbladder, intestine, pancreas | Ureter, testis |
Spinal cord, notochord |
||
| TS 24 |  |
Swimbladder, intestine |
Ureter, testis |
Spinal cord, notochord |