The document summarizes the key endocrine glands and organs in the human body. It describes the location and cellular structure of the hypothalamus and pituitary gland. It also provides details on the thymus, thyroid gland, parathyroid gland, adrenal gland, ovaries, testes, pineal gland, stomach, duodenum, liver, and pancreas. For each organ, it identifies important cell types and histological features.

1. ENDOCRINE SYSTEM

2. HYPOTHALAMUS

3. RED- PITUITARY
VIOLET-INFUNDIBULUM
ORANGE-
HYPOTHALAMUS

5. PITUITARY GLAND

6. PITUITARY GLAND
infundibular stalk (IS); pars nervosa (PN); pars distalis
(PD); pars intermediate (PI); and pars tuberalis (PT)

9. THYMUS

10. Each lobule of this gland has a darker staining cortex (left
A) and a lighter staining medulla (left B). One outstanding
feature of this organ is the presence of thymic
roses/thymic corpuscles (C). This organ, large until
adolescence, is important for the development of the
immune system. The hormone produced by this gland
is thymosin.

11. THYROID GLAND

12. The lumen (L) of each follicle is surrounded by a simple
epithelium in which the cell height ranges from squamous
to low columnar. Also present are large pale-staining
parafollicular or C cells (C).

13. RED – Follicle
with colloid
BLUE – Follicular
cells
PINK -
Connective tissue
septa

14. PARATHYROID GLAND

15. RED - Chief Cells

16. RED – Oxyphil cells

17. ADRENAL GLAND

18. CAPSULE
ZONA GLOMERULOSA
ZONA FASCICULATA
ZONA RETICULARIS
MEDULLA
CORTEX

19. CORTEX

20. MEDULLA
RED – Cells of the
medulla
BLUE – Cells of the
zona reticularis
GREEN –
Sympathetic
ganglion cells

21. FEMALE REPRODUCTIVE

23. EGG CELL

24. EGG CELL

25. MALE REPRODUCTIVE

26. Arrows shows the location of the leydig cells

27. TESTIS
1 Lumen of Tubulus
seminiferus contortus
2 spermatids
3 spermatocytes
4 spermatogonia
5 Sertoli cell
6 Myofibroblasts
7 Leydig cells
8 capillaries

28. PINEAL GLAND

31. EPIPHYSIS (PINEAL GLAND)
Stained with haematoxylin and eosin
1 - pinealocytes
2 - pineal sand (salts of calcium, magnesium and silicon

32. ALIMENTARY

33. STOMACH

34. STOMACH

35. DUODENUM

36. LIVER

37. PANCREAS

38. PANCREAS