1. 1 2

2. Follicular cells (nuclei of) Colloid containing thyroglobulin / Stored thyroid hormone

3. 1 2 (cells) 3

4. Thyroid follicles Area of parafollicular or C cells Colloid containing thyroglobulin

5. 1 2

6. Acinar tissue Pancreatic Islet

7. 1 2

8. Acinar Tissue Islets of Langerhans

9. Acinar tissue 1

10. Acinar tissue Enlargement of an Islet of Langerhans

11. 1 2

12. Medulla 3 regions of the cortex

13. 1 3 2 4 5

14. Cortex Cortex Cortex sinus Adrenal medulla

15. Endocrine cell inside the seminiferous tubule = 1 2 (whole thing) 3 (cells)

16. Endocrine cell in the seminiferous tubule = sustentacular /Sertoli Seminiferous tubules of testis Interstitial cells

17. Seminiferous Tubules of the Testes 1 2 3

18. Seminiferous Tubules of the Testes Area of sperm developing Cells with some sustentacular cells Interstitial cells lumen

19. 2 1

20. Sustentacular cells among Sperm developing cells Interstitial cells (of Leydig)

21. 1 2

22. Blood vessel surrounded by interstitial cells

23. 4 3 1= whole structure 2

24. Corpus luteum Granulosa / Follicular cells Grafian / tertiary follicle antrum

25. 1 2

26. Fluid filled antrum Granulosa / follicular cells

27. 1 2 3 = Whole structure shown above

28. Fluid filled antrum Granulosa / follicular cells 3 = Grafian / tertiary follicle

29. Large circular structure?

30. Corpus Luteum

31. 3 1 2

32. Infundibulum / Pituitary stalk Pars distalis of anterior pituitary (red, blue and gray) Pars nervosa / Posterior pituitary / Neurohypophysis