1. Pacinian Corpuscles

2. Pacinian Corpuscles

3. Meissner’s Corpuscles

4. Nasal Cavity

5. Nasal Cavity

6. Nasal Cavity

7. Nasal Cavity

8. Eye

9. Eye
A = Cornea
B = Iris
C = Retina
D = Optic Nerve
E = Lens
F = Eyelid

10. Eye: Cornea

11. Eye: Ciliary Body

12. Eye: Ciliary Processes

13. Eye: Iris

14. Eye: Lens

15. Eye: Retina

16. Eye: Retina

17. Eye: Retina

18. Choroid Plexus
In the four cerebral ventricles, the ependymal layer is modified to perform a secretory function and forms the choroid plexus. In development, the innermost meningeal layer, the pia mater, in these areas becomes highly vascularized and projects into the ventricle as a series of villus-like processes called the choroid plexus (arrow). Cerebral cortex flanks the choroid plexus, and part of the cerebellum (arrowhead) is above the villi.
(c) 1998 Keyboard Publishing, Inc.

19. Choroid Plexus