1. Pituitary: Left Anterior, Right Posterior

2. Anterior pituitary
The pink cells are acidophils
1. Somatotrophs
Human Growth Hormone (hGH)
2. Lactotrophs
Prolactin (PRL)

3. The dark purple cells are basophils:
1. Corticotrophs
Adrenocorticotropic Hormone (ACTH)
Melanocyte-stimulating Hormone (MSH)
2. Thyrotrophs
Thyroid Stimulating Hormone (TSH)
3. gonadotrophs
Follicle Stimulating Hormone (FSH)
Luteinizing Hormone (LH)
Anterior pituitary

4. Anterior pituitary
The pale staining chromophobes
have few cytoplasmic granules,
but may have secretory activity

5. Pituitary: Left Anterior, Right Posterior

6. These axons from the hypothalamic- Hypophyseal tract release ADH and
Posterior Pituitary
These axons from the hypothalamic-
Hypophyseal tract release ADH and
Oxytocin

7. Thyroid and Parathyroid glands

8. Large open spaces are follicles
for storage of I2
Thyroid 100X

9. Follicular cells:
T3 and T4
Thyroid 400X

10. Parafollicular cells:
Calcitonin
Thyroid 400X

11. Parathyroid 100X

12. Parathyroid Hormone
Parathyroid 400X

13. Adrenal Gland 100X, Cortex

14. Adrenal Gland Cortex, Zona Glomerulosa
Aldosterone

15. Adrenal Gland Cortex, Zona Fasciculata
Cortisone, Hydrocortisone

16. Adrenal Gland Cortex, Zona reticularis
androgens, mostly dehydroepiandosterone (DHEA)

17. Adrenal Medulla
Epinephrine and
norepinephrine

18. Pancreas 100X, Islets of Langerhans

19. Pancreas 100X, Islets of Langerhans
Alpha Cells: Secrete Glucagon
Beta Cells: Secrete Insulin
Delta Cells: Secrete Somatostatin
F-Cells: Secrete Pancreatic Polypeptide

20. Testes, 100X

21. Testes, 400X
Interstitial cells
Testosterone

22. Ovary, 40X

23. Ovary, 100X
Graafian follicle with oocyte
Follicular cells
Estrogens

24. Ovary, 100X
Corpus Luteum
Progesterone